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jeremybirn
12-08-2007, 03:53 PM
This is an old challenge now, this thread is archived. If you scroll down to the Challenge #13 section of the downloads page, you'll see that the models can still be downloaded for your tests, and also that a gallery has been made of top entries. Feel free to browse this thread to see what others have posted, even though you can no longer post here.

NEW RULES, NEW PRIZES !

NEW RULE: When you post your image, share a little bit about how you made it. Please mention facts such as: what software you used, which rendering algorithms (raytracing, global illumination, final gathering, etc.), what kind of system you render it on, how long it took to render, and if you did anything to optimise the scene or speed up the rendering process (rendering in layers, baking, etc.)

Your image is your own copyrighted work, and you are free to display it on your webpage, on other forums, or in your portfolio. Please include a credit to the modeller who built each challenge. This challenge was modeled by Jeremy Birn. Linking to our forum is always appreciated as well.

NEW DEADLINE: Images must be posted by January 31, 2008 to be eligible for prizes.

THREE PRIZES will be awarded:


Best Overall Image (to be judged by Jeremy Birn based on what's posted by January 31, 2008.)

Best Use of Bokeh (using bokeh effects is optional, but this scene is a perfect test case...)
Genius Award (for the person who posts the most useful and helpful information on this thread - breakdowns of your own work, feedback to others, clever tricks to make the scene easier to render, anything else useful you post counts towards this.)
Anyone who posts by the end of January 2008 is eligible to win a prize (except for Jeremy Birn, who will be judging the contest.)

THE SCENE

Lighting Challenge #13 is on-line, and this one really is a "challenge." It features a fireplace, a Christmas tree, and lots of lights and pine needles. The challenge is to bring this scene to life and capture the feeling of Christmas time. You can add or change what you want about the scene in order to produce the best final render possible. If you're ready for our most complex lighting challenge scene yet, you can download it now:

http://www.3drender.com/challenges/

(More file formats are still needed - people with different software, please help submit those to me...)

http://www.3drender.com/challenges/christmas/test1.jpg
Here's a peak at the scene, without much lighting or any texture.

-jeremy

jeremybirn
12-08-2007, 04:44 PM
Thanks to polymess, there's now a Lightwave .lwo format on the download page.

I know there are Max and C4D users reading this... if you've gotten the scene imported into your software, I need volunteers to give me a .3DS or .C4D file. I'm happy to host file formats for other software as well.

-jeremy

jorust
12-08-2007, 06:33 PM
The LWO should open up fine in Modeler.

The OBJ opened as one layer in Modo, but I broke it up into six layers. The XmasTree´s needles in one of them.

sick73
12-08-2007, 07:27 PM
Jeremy:
Great challenge, great scene. Looking foreward to finishing this one.
Imported the obj in max ok. The scene just needs a few normals fliped.

Just to get something up here;
3ds max, MR, Photoshop.
first test renders:

no materials and no light setup yet. simple render with 4 onmi lights, no shadows.


http://robertograham.com/images6/christmas01.jpg

Ambient occlusion pass.

http://robertograham.com/images6/christmasao.jpg

Simple comb in photoshop.

http://robertograham.com/images6/christmas02.jpg

lauras
12-08-2007, 09:54 PM
Great challenge idea! I'm so excitied to do this one :)

jojo1975
12-08-2007, 10:17 PM
COOL ! perfect for a postcard :)

Fex
12-08-2007, 10:28 PM
nice challenge Jeremy !
here is my first two hour light tweaking attempt
software: XSI and Shake

no FG or Gi but quite alot lights mainly point lights
Did some grading and glowing in Shake using a half float openExr file

http://i162.photobucket.com/albums/t271/fexa/Christmas_A.jpg

jojo1975
12-08-2007, 10:35 PM
COOL ! perfect for a postcard :)

floze
12-09-2007, 02:24 AM
Yeah. I'm in. :arteest:

Good luck everyone!

jeremybirn
12-09-2007, 03:00 AM
Welcome floze, jojo1975, lauras !

sick73 - Glad to see that working! The shaded view shows some of the round objects need their edges smoothed or normals recomputed. The occlusion pass looks like the lower parts of the stockings, and the mantle in front of the fire, need their normals reversed. The way the bevel is going bright between the ceiling and the walls looks like you need a higher spread angle on the occlusion too. Overall it's encouraging to see these tests, it lets me know everything's getting translated properly.

Fex - Great to see it working in XSI! If you're already started lighting, everyone else had better catch up!

-jeremy

seedra4
12-09-2007, 08:01 AM
Hi Guys; Hope everybody is doing fine...

This is my first contribution in CGtalk challenges..
I took some time yesterday to work on the scene and this is what I have so far..

http://img258.imageshack.us/img258/2923/christmas01si7.jpg (http://imageshack.us/)

I used Maya 2008 - MentalRay rendering engine (Physical Sun, Portal Lights on the windows, and couple of mia materilas for the ground and walls)... then I took the stillframe to photoshop for sharpning..

Comments and critique are most welcomed, and Inshallah.. I will carry on working with the scene this evening... wish me luck :)

lazzhar
12-09-2007, 12:21 PM
Hi, thanks for the challenge.
This is my try using the beta version of V-Ray for Maya and its straightforward GI.
I liked the shap look of the above great rendering by seedra4 so I added a bit of it in Combustion.

http://img85.imageshack.us/img85/1053/try1xz5.jpg

JPegGT
12-09-2007, 02:28 PM
Hey guys, I'm new here and this is the first challenge I'm taking on.
I want to learn more about lighting/rendering so I though this challenge would be a good place for me to try out some stuff.

Here is what I have so far:http://img339.imageshack.us/img339/7420/firstattempthu0.jpg

ACamacho
12-09-2007, 04:46 PM
Nice start guys! Especially seedra4's image, nice overall ambience in there. Good luck to those who participate!

L33tace
12-09-2007, 09:06 PM
Great challenge, though I can't seem to get any of my mediocre programs to like the obj file. I'll see if I can get it to work. :)

ACamacho
12-09-2007, 09:09 PM
@L33tace: What is the program you are using?

cosmonaut
12-09-2007, 09:17 PM
Jeremy, I've got a blender version of the file if you want.

L33tace
12-09-2007, 09:24 PM
@L33tace: What is the program you are using?
I've tried Daz|Studio, Carrara 6 and Byrce. D|S actually imports it the best but even to do a test render is slow and by the time I add materials and lights ... I'll just have to develop more patience :)
Is it just me or is an obj file of nearly 194,000kb a bit on the big size?

pbalsic
12-10-2007, 12:08 AM
Hi guys! We have great challange here!:)
Here's what I have so far, I used maya and mray. I was played with warm and cold colors to achive nice colorful atmospere. The rendering time is about 5 min.
Please tell me what should I improve or change! Thanks!

http://img146.imageshack.us/img146/8628/xmas2nu2.jpg

herbertagudera
12-10-2007, 12:27 AM
already?! im still at challenge 12.. lol

i see this challenge is off to a good start, eh?!
great images guys..

Nosferatu8650
12-10-2007, 06:20 AM
i rendered it in about the time it took me to walk and get a coffee
http://aycu31.webshots.com/image/36790/2002115764696985403_rs.jpg
Maya,Mr,Fr

jojo1975
12-10-2007, 10:02 AM
the obj is huge (138 mb or some unzipped) so if any one need I got the 3ds file. I can upload via Ftp if jeremy wants.. waiting for details ;)
jojo. Today I will upload first try

jberan32
12-10-2007, 11:22 AM
first off, jeremy thanks for the cool scene. I see everyone has some great images.

for mine to help speed up the rendering I just hid the tree geo and used a poly stand in for blocking. I still have to comp in the windows but just want to get a sense of what to do next.

pbalisic- great image I like the textures and how you put a lamp light on the dresser feels "homey"

http://i63.photobucket.com/albums/h149/sunshine1475/Xmas_02.jpg

http://i63.photobucket.com/albums/h149/sunshine1475/Xmas_02.jpg%5B/IMG%5Dhttp://picasaweb.google.com/jberanVFX/JayBeranVFX/photo#5142301580312824802http://picasaweb.google.com/jberanVFX/JayBeranVFX/photo#5142301580312824802http://picasaweb.google.com/jberanVFX/JayBeranVFX/photo#5142301580312824802

dburdick
12-10-2007, 03:19 PM
Here's my attempt in Vue. Ambient Occulusion lighting for the overall scene with 2 additional point lights - one to light the fire and one from the top front to help light the tree. The bulb and ormanment colors were done procedurally using a world mapped fractal to generate the different colors. The flames are an Alpha Plane. Took about an hour to render on my antique Pentium 4. I'm hoping one of the presents under the tree contains a faster computer for me.

http://www.skinvue.net/images/XmasChallenge.jpg

greyother
12-10-2007, 04:10 PM
i rendered it in about the time it took me to walk and get a coffee
http://aycu31.webshots.com/image/36790/2002115764696985403_rs.jpg
Maya,Mr,Fr

The splotchiness on the fireplace mantel is caused by photons which aren't blurred enough. I would try turning up the final gather samples.
How far is the coffeeshop? That looks like it took more than a few minutes to render . . .


Great job pbalsic and seedra4. Your work really sets a mood. What kind of machines are you guys rendering on that your renders only take a few minutes?
I have a dual P4 xeon 2.8gig with 2gigs of ram and my renders are taking anywhere from 8 to 36 min!! This scene seems really heavy for how old my computer is. Does anyone have any advice on scene/render optimizations?

pbalsic (http://forums.cgsociety.org/member.php?u=133754): The only big issue that stands out to me is the shadows on the floor need their sampling turned up. The edges of the shadows are too grainy.

jeremybirn
12-10-2007, 04:18 PM
seedra4 - Great job! The physically solid impression is there. Maybe you can make the pine needs a little more translucent, so the tree will go brighter with all the light from the window coming through it? The texturing that you've done already looks good, especially the feeling of the floor.



Lazzhar - Wahoo! That's great! It looks like the tree needles themselves are glowing, not just the lights, but it's a fascinating effect. The bulb as a stand-in for the fire works well enough for an early test. Tree to get different colors for the fire light compared to the tree lights, maybe the fire is warmer?



L33tace - When I get time it would be interesting to see if I could make a set of smaller .obj files as an alternate format... For scenes with over a million polygons, a large .obj size is normal, since .obj is a text format that spells out line by line the X Y Z locations of each vertex.



Cosmonaut - Thanks! See my PM.



pbalsic - Wahoo! That's great! Love the colors! See if you can get more light from the lights on the tree, and do more with the topper!



Nosferatu8650 - Great start! Really solid looking! The hard-edged shadows from the fire light are distracting, that should be much softer and needs some more decay. Try putting in a little more bounce or fill light on the dark sides of the walls, and maybe a little less bounce or fill on the chimney above the mantle.



Jojo1975 - Thanks! See my PM.



jberan32 - Good start! Too much of the scene looks blurry to me, although keeping a natural DOF could be good. The lighting on the right side above the dresser has a strange curved shape, I don't know where that's coming from.



Dburdick - Great! The occlusion helps give it a nice solid feel, and the textures are working. See if you can get some color into your lights, based on the fire color, light colors, etc. Also work on shadows, the gifts especially look so brightly lit that I expect to see more self-shadowing. It would be nice to see the lights reflected in the windows. When the rest of the scene is that bright, try doing something nice to the tree topper too.



-jeremy

kanooshka
12-10-2007, 04:41 PM
Wow amazing work already everyone!

I'm very excited to start this, Good luck all!

andystopps
12-10-2007, 07:43 PM
Great stuff, everyone. I particularly like the colours in yours, pbalsic, also the painterly look in yours, jberan32.
My first thought on this was to look at the reflection of the scene in one of the glass baubles (not easy to set up, because you can't see the reflections in the openGL display). I think that the image below is about as far as I want to take this approach, and might go for a more conventional viewpoint. Still, for what it's worth...( done using XSI 6.02, with the Mental Images Architectural material for everything, and Depth of Field from a depth pass driving an IDefocus node in Shake. I also added some grain, which I think often helps to make an image less CGI-like .)

http://i158.photobucket.com/albums/t118/andystopps/xmasBaubles_01.jpg

kanooshka
12-10-2007, 09:47 PM
Hey everyone =)

pbalsic: great looking image so far I love the light coming in through the window. I'm curious where the blue light hitting the ceiling would be coming from. Is that a reflection off the ground? And also maybe for the fireplace you could increase the brightness of the light it's giving off.

Nosferatu8650: Good start. Looking forward to seeing the next renders.

jberan32: Great mood set by the image it's very warm and soothing. Though I'd suggest a little less blur.

dburdick: Good work so far. It looks like your point lights could cast some more shadows and possibly be angled more to show form. It's hard to tell so far. Good textures so far!

andystopps: Awesome idea! But I'd have to agree that it'd be difficult to pull off. Maybe if the ornaments were completely mirrors or had a very suddle tint to them it would make it a little simpler to pull off.

As for me I think I'm finished setting up my composition here's a flatshaded image of what I have so far. I changed the setup of the room quite a bit. I wanted the diagonal of the presents to lead into the fireplace. Also for lighting I wanted a mix from the window, tree lights and fireplace lighting the scene to create a very warm homey feel. I hope I'll be able to pull it off!

http://www.dockay.com/LightingChallenge_Christmas/christmas_01http://www.dockay.com/LightingChallenge_Christmas/christmas_01.jpg


(http://forums.cgsociety.org/member.php?u=215127)

MooseDog
12-11-2007, 01:34 AM
here's my first render for this scene.

straight lightwave render, no post. except to re-size still need to tackle some texturing before things get more involved.

scene set-up: area light coming from the big door. 2 point lights for some simulated bounce. an exterior distant light for the moon coming in through the window. a point light for the "fire". and final gather g.i. to fill things in and set the late night mood.

i can see there needs to be more of a rim on the tree from the moon. what else? thx!

http://robin.hoover.googlepages.com/xmas_v2.png

kanooshka
12-11-2007, 07:10 AM
-Hey All

So far my approach is using all spotlights and pointlights no FG or GI or Ambient Occlusion as of yet. I feel I have the most control this way. I have here a breakdown of what I've done so far:
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02moon.jpg
Moonlight
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02Rim.jpg
Rimlight on the ornament from the moon
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02skyfill.jpg
Fill lights from the sky
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02rightwallbounce.jpg
Bounce light from the right wall off the screen
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02Keyinfireplace.jpg
Keylights from within the fireplace
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02areaoutsidefire.jpg
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02areaoutsidefireplace.jpghttp://dockay.com/LightingChallenge_Christmas/Christmas02areaoutsidefire.jpglight cast outside of the fireplace
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02fireplacebounce.jpg
Bounce from the fire off of the floor
http://www.dockay.com/LightingChallenge_Christmas/Christmas_02composite.jpg
Composite

Still needs a lot of work obviously but it's a start =)

greyother
12-11-2007, 08:04 AM
Ah . . . my first post!
http://www.greyhash.com/images/Misc/moonlight.jpg


Rendered in Max 9 with Mental Ray. I used a couple of point lights and a directional light plus FG. I don't like how the x-mas lights look but I am through for the night I think.

jeremybirn
12-11-2007, 02:24 PM
This is great. Secret plan: Let's try to get this thread on the front page by Christmas. :thumbsup:

andystopps - Welcome! I don't know if the tree has enough detail to support that level of close-up, but if you put interesting things into the reflection (a nice fire, some other things in the room or the window visible?) maybe it could work.

MooseDog - Nice angle. The pine needles look like they have a lot of ambient light, it would be better if they were darker, except where there's a light in the tree to brighten them.

kanooshka - Nice job! Choosing to focus on the fire really will make you work at making the fire look good.

greyother - Good start. I don't know what's causing the striped pattern on the floor. You'll have to work on getting the point lights positioned in the light bulbs on the tree, and making sure the bulbs glow without the cord lighting up.

-jeremy

T-R
12-11-2007, 03:40 PM
Hi,

This is my first time trying out a challenge. Hope to have enough time to see this through. Here is my first attempt. I will probably go in another direction but would love some comments. Not too sure about the contrast as I really need to calibrate my monitors :blush:
Maya with mental ray. 1 Directional light, 1 point light for the fire, 1 point light for fill. Final Gather for bounce.

http://img413.imageshack.us/img413/3042/xmaseh6.jpg (http://imageshack.us)

TheNeverman
12-11-2007, 07:12 PM
gorgeous colors T-R, the light fall-off on the floor seems a bit 'quick' though... maybe dial the rich blacks down just a smidge...

lauras
12-11-2007, 07:18 PM
T-R, I love the feeling of your image. It reminds me very much of sneaking downstairs Christmas eve to peak at presents. I think possibly the fire light is a bit hot, especially that very hot spot on the inside of the fireplace. Otherwise I like what you've got so far.

greyother
12-11-2007, 09:50 PM
My first try was actually in Maya but my render times were just too long. I couldn't figure out why so I switched to Max. I noticed the diagonal stripes as well but I couldn't figure out what was causing them. Since I imported the obj into max I didn't have your point lights to work with. I will go back in and create my own point lights in max but I was having some problems with falloff in the photometric light settings. I am still far more comfortable with Maya than Max, so I am slowly learning the differences between how things are handled.

Also - my scene looks MUCH brighter at home than at work, so I suppose I need to lower the gamma on my monitors. Any good advice at getting good gamma levels for monitors? I was thinking about buying a "spyder" since I will be getting a dual monitor setup soon.

When importing the obj into max I had to fix the UVs for the fireplace and floorboards (I think the molding still needs its UVs fixed). Also - although the FBX file will import into max, the geometry's position seems to be completely off. The dresser and various other objects are outside the room.

Overall great work everybody!!

kanooshka: I am especially impressed with how you split out your lights. Can you give me an idea of what types of lights you used and placement? Great comp!

EDIT: I will upload the Max file somewhere once I get home so Jeremy can post it for others using Max.

kanooshka
12-11-2007, 10:26 PM
Hey greyother first of all thanks =)

I think I know exactly what's causing the problem! =D I've noticed that the diagonal lines exactly correspond with the slats on the wall. Now it could be 1 of 2 things either the slats on the wall aren't doublesided or they are not set to cast shadows. Hopefully that's it.

As for the calibrating of the monitors I know that with nvidia video cards there's a calibration tool built into the control panel. You might want to try that.

For my scene what I have going is a directional light for the moon with raytracing and a little light radius so it creates soft shadows. I have another directional light just linked to the ornament on the tree for the rim or probably more of a kick than a rim. Then I have a set of 6 spotlights shining in on throught the window with a mental ray area light attached which is also casting raytraced shadows. The bounce light is another spotlight with an area light the size of the wall sending raytraced shadows back towards the windows. In the fireplace I have 3 point lights with different color variations to light the inside. Then I have another spotlight with noise mapped to the color to look like tongues of flame shining onto the floor. And finally another light from under the floor shining towards the tree of fireplace light.

Eventually I am going to be making a lot of changes with the shadow setup it's taking a very long time to render with all the raytracing through the needles of the tree so I will be making separate lights for the shadows from the tree that are depth mapped.

Looking forward to updates!

jojo1975
12-11-2007, 10:28 PM
ok so my first entry. Suggestion acccepted. I'm quite satisfied with the light from the fireplace (I've to add flame with FumeFx or in post.. still to decide) I will add DOF in final rendering.. but there is still something that doesn't make me fell ok.. but I dont' know what..
P.S. for me the max file (using max 9.0) since to work well :) but if there are problmes let me know and I will try to fix
http://img243.imageshack.us/img243/9881/1stentrygs0.th.jpg (http://img243.imageshack.us/my.php?image=1stentrygs0.jpg)

musk
12-12-2007, 10:54 AM
Jeremy I can provide you with a blend file for Blender (Version 2.45 should be openable from any 2.4x release). I have simply imported the obj file and haven't done any clean ups.
What is the best way to provide it to you?

jeremybirn
12-12-2007, 02:15 PM
Thanks to jojo1975 and cosmonaut, we now have Max and Blender files on the download page.

-jeremy

jeremybirn
12-12-2007, 02:25 PM
T-R - Nice job! The fire light could be located more back into the fireplace, with less of a highlight towards the front. For the lights on the tree, it would be nice to see more illumination from the lights in 3D, with less of the 2D glow or bloom effect on top. I wonder if the lights could have a little more saturation, too?

greyother - In terms of color correction, an inexpensive first step is to find a reference photograph (take one with your own camera, or download from flickr.com) of a christmas tree or christmas lights, where you like the tones and exposure, and view that side by side with the renders you are making. If you are matching the tones from the reference image, then your work will match the tones from the reference image on any monitor. A few adjustments to make the picture look right might be in order on some monitors, and in some offices there's more light than you'd have at home. If there are windows or big flourescent panels lighting your office, then expect your monitor image to look different than you see at home in the evenings.

jojo1975 - Good start on the scene. I don't know why some of the branches of the tree are lit brightly, and others aren't. Maybe if it were more clear where that light was coming from, and if it lit the tree more evenly, and cast shadows, it would be more believable? The dark board in the floor almost looks like a little step down or hole in the floor.

-jeremy

Buca
12-12-2007, 05:26 PM
Hi,
This is Inspirer test
http://img143.imageshack.us/img143/5362/testlo4.jpg

kanooshka
12-13-2007, 05:09 AM
Looking great Buca I love the floor and the fireplace. A couple suggestions I could think of so far would be more light coming in from outside because the background plate you're using is pretty bright and some more bounce light towards the chimney because there is a lot of black. Keep it up =)

I started working on the lights in the tree and I wasn't really liking the look and feel of it so I felt like making it harder for myself for some reason. I wanted to make the christmas lights of a different variety. Most trees that I've seen have had the smaller lights in larger number. This will make this challenge even more of a challenge for me but I definately love a challenge.

I wasn't exactly sure how to do this but after some thought I found the perfect method. What I did was take a curve and wrapped the tree. I then took a set of 2 cubes and extruded them along the curve with twist. I then created 4 lights of different colors set point lights in them then duplicated them along the curve. Then randomized their rotation with a mel script.

I have 2 version here the first version is quadratic decay and the second is cubic. Personally I like the quadratic decay better.

http://www.dockay.com/LightingChallenge_Christmas/lights_quadratic.jpg
http://www.dockay.com/LightingChallenge_Christmas/lights_cubic.jpg

Phantom-vfx
12-13-2007, 07:55 AM
Nice entry everybody !

here is my first entry, so far...
I only set up the lights ( need some tunning )
no textures and shader work get.. no FG, raytracing, GI...no post work just maya soft with depth map shadows, Im using 6 spot lights and 2 point lights.

http://www.phantom-vfx.com/gallery/phantom_previz_001.jpg
render time 55seg
C&C please !

wisedog
12-13-2007, 12:27 PM
noob question:

what is bokeh effect?

mlykke
12-13-2007, 01:27 PM
noob question:

what is bokeh effect?

http://en.wikipedia.org/wiki/Bokeh

jojo1975
12-13-2007, 09:52 PM
Second try. Changed camera (i think the first one was too narrow)
Add DOF (so I dont' need anymore overdetailed fire) Added star effects (in max) and star effect in photoshop (and also adjusted a bit light)
I will try to vary something in the texture but I dont' know what.
There are two rim lghts (under the tree) one omni near the fireplace, and a it of environmental.
Probably I should vary the color of rim .. every suggestion well accepted
http://img230.imageshack.us/img230/1112/scene3ws9.th.jpg (http://img230.imageshack.us/my.php?image=scene3ws9.jpg)

eldritch48
12-13-2007, 11:45 PM
This is my first entry into the Challenges, feels good to be here!

My image was rendered in Vue6I using Global Illumination. Lights:

1: Sun (moon) light - Infinite Light
2: A street light spot out the window
3: A light from the other room to cast the shadow of the boy
4: A spot set to affect the ornaments only to bring up a bit of twinkle
5: The tree light objects were converted to area lights.
6: I wanted more tree lights, so I duplicated them, changed the filter and rotated them around the tree a bit.

Render time was 4 hrs @ 1600x1000.

http://www.pinatagod.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=4553&g2_serialNumber=2

sick73
12-14-2007, 02:58 AM
still test rendering. this time trying to go for a chtistmas morning atmosphere.
just an exterior sunlight system for the lights.
gi and fg combination on mental ray, 3ds max. render time about 10 minutes, but already had the photon map stored. with about 100000 photons.
http://robertograham.com/images6/01.jpg

kanooshka
12-14-2007, 04:22 AM
Added more lights to the tree as well as did the lighting on the tree. I originally had the lights transparent with a point light in it and the lights casting shadows and refracting through the glass. Unfortunately that took over an hour and a half just to render that pass. I decided to change the setup so the lights didn't cast shadows, were translucent and use volume lights instead of point lights. This rendered much much faster.

http://dockay.com/LightingChallenge_Christmas/Christmas_03christmaslights.jpg

musk
12-14-2007, 09:33 AM
Ok so I decided to join. Before showing you the images a little background information about me: I'm not a professional and I'm doing this as my hobby for fun. This is my first contest on CGTalk and I thought it would be cool to get some practice after having read the great book by Jeremy Birn Digital Rendering & Lightning 2nd Edition. Jeremy thanks for a valueable asset.
So here it goes. I haven't applied any textures yet and I have just tweaked some of the materials a little. The software I'm using is Blender 2.45. I'm rendering on a Intel Dual Core with 2Ghz and I'm using the Blender Internal Rendering since I'm using the compositor to render in layers. I turned on raytracing to get some lightning effects more easily and to have some mirror and shiny metal effects on the ornaments and because my machine can handle it.
So here it goes:
This is just filllights to give a evening mood going
http://img149.imageshack.us/img149/4513/filllight1pf1.jpg
Rendertime was roughly 40 seconds and I'm using area lights to cast a dull blue light.
This is just the fireplace and I haven't modeled a fire yet but am planning to do so soon:
http://img149.imageshack.us/img149/4549/fireplace1sj6.jpg
This is a area light in the back of the chimney. Rendertime roughly 1 min.
This is the fireplace with a spotlight added to give a firyshine and another spotlight to simulate bouncelight from the floor.
http://img149.imageshack.us/img149/889/fireplacewbouncefillligap6.jpg
I ve added a slight texture to one of the spotlights to give it some noise from the fire. Render time 1min.
This is render with only a spotlight to highlight the ornaments:
http://img149.imageshack.us/img149/6591/highlightornaments1ps2.jpg
Rendertime about 30 secs. All other lightsources disabled.
This is a render with just the christmastree lights. A pointlamp for each light that is set very low:
http://img149.imageshack.us/img149/5690/xmaslights1fz0.jpg
Shadows are turned of for the point lights since I couldn't get them to render through the lamp mesh. I have to figure out how to do that and still be able to enable shadow. In order to mask the light by the tree I set up a render layer for the tree mask and put that on top of the normal pass to mask out the light that is hidden by the tree. Rendertime roughly 1 min.
This is the combination of all the above renders without the lamp meshes (I just forgot to add them :sad: ):
http://img149.imageshack.us/img149/4998/alllightscombined1io4.jpg
Render time is about 1:10 min
This is the combined render with AO and Radiosity turned on. I also added a slight bloom via compositor to the lamps.
http://img149.imageshack.us/img149/4164/testrender8qx2.jpg
Radiosity skyrocket the render time to approximatly 2:12:30 min so I'm not sure if I will use it in the final render although it increases the quality quite a bit imho. The AO pass was in add and subtract mode so it added quite some light.
AO pass:
http://img149.imageshack.us/img149/4950/aopass1ok8.jpg
Currently I'm trying to find a way to get an AO Pass that does not highlight the image so much but still darkens the elements that need darkening. I kind of like to have the mood of the combined lightning image with the additional quality of the AO.
Anyway this is a long posting and I hope you all read it up to here. So keep up the great work and C&C always welcome but don't be too harsh on me ;)

loramel
12-14-2007, 03:48 PM
I take this great scene as opportunity to enter my first competition here.

This is my first try and more a test and rough sketch for me to get a hold of the scene and the possible lighting setups.

I am using solely blender for this project.

The idea was to create a contrast between the cold winter outside and the cozy warm
christmas room inside. No textures so far are used beside a reflection map for the glass balls.
For the fireplace and its glow I use 4 pointlights and 1 spotlight. 1 hemilight is used to do the light bounce from the floor.
For each electric candle on the tree I use a point light with limited range acting only on the tree parts and the glass balls. The get the glow from the tree an the walls I use 2 separate points lights which do not light the tree.
The moonlight lighting the door frame and the window frame is one spotlight each. Ambient occlusion is used minimally to achive better shadows.

No postprocessing or compositing was applied so far.

The next step will be to separate into different render layers and work on the balancing.

Render time for the current image was at 16 min at 1600x1200

http://loramel.gmxhome.de/xmas/xmas_01.jpg

blueglitchman
12-14-2007, 11:40 PM
Awesome! Thanks for putting this up Jeremy. I can't wait to get mine up. :) Great job so far everyone!

MasterZap
12-15-2007, 03:53 AM
Here's my take on it....

mental ray (duh), all mia_materials, physical sun/sky with portal lights, photographic exposure shader, mia_lens_bokeh for DOF with hex iris.... FG, no GI. Four lights
- one in fireplace
- sun
- a ceiling light
- a single skylight portal

Image is Straight out of the renderer, no post (glare effect is "Lume Glare").

Rendered in 40 minutes in HD res.

http://i51.photobucket.com/albums/f366/MasterZap/xul13.jpg

Also have a DOF-free variant:

http://i51.photobucket.com/albums/f366/MasterZap/xul10.jpg

And one w. crazy DOF ;)

http://i51.photobucket.com/albums/f366/MasterZap/xul11.jpg

/Z

jojo1975
12-15-2007, 11:45 AM
Well Let's say that Jeff has conviced me. I was trying to tweaking some light for bubls in Vray but I'm not satisfied with the result I will give MR a chance since I alwyas wanted to learn more about it ;)
So more to come this week and btw can jeef share a bit of hints about the light material ;) ?
jojo

theshakoone
12-16-2007, 06:51 AM
Ok so I'm one of Greyother's students. I haven't been doing 3d for long, maybe 7-8 months now. He recommended that we enter this for building our skills and I'm going to give it a shot and see what I get. I know the left side is a little blown out, I have to turn down the sun a little bit more. I'm using 3d max 2008 with the mr architextural shaders for the most part. I didn't put a shader on everything and my scene is far from done, I was just testing out some lights. I also hid the tree because it's very dense and destroys my computer. I have a mr sun and area light in this scene with fg turned on. I'm running a 3.0 p4 (crap, i know) with 2gb of ram and a quadro fx3450 gfx card. any help would be highly appreciated. oh btw Mr. Hash, it's sako. :P

http://i198.photobucket.com/albums/aa106/theshakoone/test_render.jpg

mJunaidb
12-16-2007, 08:36 AM
Hello everyone! WOW! Awsome work every one! thumbs up to all!

-M.Junaid Baig.

greyother
12-16-2007, 10:14 AM
Master Zap: I am in awe of your abilities.
kanooshka: Interesting what you said about the volume lights instead of point lights. My render took about 26 minutes with the point light shadows on.

Here is v2 for me:

musk
12-16-2007, 11:04 AM
Here is an updated version from me. I changed the perspective a little. Additionally I lowered the energy on the AO Pass from 1 to .1 and I added some spots for the shine from the christmas tree on the walls.
The windows are made to show reflections and I added a brick texture to the chimney. The christmas balls got a second material shiny red. and I also lowered the energy of the lamps that make the tree shine green. Last but not least I made the lights brighter so that they showup better.
http://img84.imageshack.us/img84/6761/xmaslights2gw2.jpg


Rendertime was 10minutes (while I was surfing the internet)
Tips on how to improve the image are greatly appreciated as well as further C&C
Things that are still missing: Texture on the floor. Some variation on the material and textures of the presents.
BTW is it ok if I put this up on another forum for C&C?

eldritch48
12-16-2007, 02:03 PM
Musk - Nice work, but your tree looks really bright in relation to the rest of the image...might want to tone down that spotlight a little bit!

greyother
12-16-2007, 02:54 PM
Ok so I decided to join....Currently I'm trying to find a way to get an AO Pass that does not highlight the image so much but still darkens the elements that need darkening. I kind of like to have the mood of the combined lightning image with the additional quality of the AO.
Anyway this is a long posting and I hope you all read it up to here. So keep up the great work and C&C always welcome but don't be too harsh on me ;)

I think you are looking for "multiply" not add or subtract.

Also - use "levels" to control the spread of the ambient occlusion. Not as accurate as actually changing the AO settings but an efficient way to control your AO pass.

jeremybirn
12-16-2007, 06:00 PM
Buca - Welcome, that's a nice job! I like the look of the fire. I'm glad you've got different colors on the ornaments, maybe they could be more reflective and less diffusely lit. The light son the trees are nice, maybe color variety there also?

kanooshka(1) - The big 1970's style lights were chosen the same reason I chose to make a Blue Pine with the long needles: fewer, larger objects are more efficient. Some of us have memories of those old-style lights, even if they are considered fire hazards today.

Phantom-vfx - Welcome! Nice start. See if you can do more with the tree, maybe reflect the lights in the windows, let the lights on the tree illuminate it more? The light from the fireplace could be softer and distributed more through the area. I think that some shadows or occlusion would help on the gifts, some of them seem to lack a sense of contact right now, like the gold one behind the red in the center.

jojo1975 - Go easy on those optical effects, man! The fireplace has shadows, they could just be a little softer. Everything looks too bright to me, and around the tree the light doesn't seem to cast shadows: look at the wal beside the gifts. There are 3 circlular shapes near the tree (one on the side wall, two above the tree) that could be smoothed out or toned down.

eldritch48 - Welcome! Lovely image! Maybe the camera could come from a lower angle. This way the shadow of the boy could be bigger in frame, and we also could see the scene more from a child's point of view. It gets so black in the shadow of the bottles near the fireplace, but then in other parts of the scene there is a lot of fill light. Maybe just do a fill light pass with colors from the tree, the window, the bounce light, etc. start with that, multiplied with some occlusion, before you add the main light with the shadow of the boy.

sick73 - Great work so far! Keep going with that!

kanooshka(2) - The scene's looking great! I don't know about the mix of light types in the same part of the tree, I guess that's working but the smaller ones are kindof drowned out.

loramel - That's great! See if you can get more illumination from the lights on the tree, and maybe make the star at the top more visible?

MasterZap - Nice work! You might rotate the tree more towards the camera, the back-side is so much sparser than the front that combined with being blown-out in the lighting, it really seems to fade away. I've seen situations like the ball in the foreground, where the refraction looks completely different when DOF is turned on that when it's turned off. I bet even if the DOF were adjusted so that the ball was in focus, it would still look different. I'm glad you're using bokeh. To sell a scene with convincing DOF usually you have to have something that the camera is focused on, so then it looks natural that the background or foreground falls out of focus.

theshakoone - Welcome! I guess we have something in common, Greyother was one of my students. Keep going with your scene, I look forwards to seeing more of your work (and more of the tree.)

mJunaidb - Welcome! That's a good start on the scene. The fire looks inverted (dark where the flames should be, bright were there are no flames.) The light from the fire looks too bright and hard as well. See if you can make the lights look a little more red, like their reflections.

greyother - Nice scene! It looks a little under-exposed to me now, I wonder if you could get more out of the tree lights.

musk - Your new scene (post #60) is a big improvement. I think the tree looks like it has too much ambient light on it. It would be better to let some of the needles go dark in places where they aren't near a tree light, and let the star and ornaments be more reflective instead of diffusely lit. Some color in your tree lights might add to the scene as well. Feel free to post in other forums, but please link to where you got the scene and let them know its a part of the light challenges.

-jeremy

theshakoone
12-16-2007, 06:20 PM
I wanted to try a different angle for the lights, so i can get some light coming out of the fireplace. i turned my area light really low, i also put some redness in the sun so i can get that early dawn/dusk feel. with a tree! :). i need to turn up the light coming from the fire. im still test rendering and seeing what angle looks the best. i can use some help there. also, as you can see, i don't have all the materials on either. i hit render and left, halfway through it i came back to find that Greyother's awesome neon lights were on there still (because he gave me the file). so i was too lazy to start the render again.

edit - (the top one is the newer one) fixed the neon lol. i added materials to the fireplace, but i have to fix some. still no material on the wood in the fireplace, will do soon. i was starting the point lights for the lightbulbs and put 2 in, but they didnt come up in the render. oh well. its too late right now to go and fix them. added some variety to the colors of the balls on the tree. should i exclude the tree from the area light thats inside? im not feeling that shadow very much, but i am still running shadow maps for now no raytracing yet. also, what are sky portals?

render time - about 40 min with fg on low.

http://i198.photobucket.com/albums/aa106/theshakoone/test_render13.jpghttp://i198.photobucket.com/albums/aa106/theshakoone/test_render12.jpg

jojo1975
12-16-2007, 10:18 PM
Ok started some try with MR. skylight portal and mia for light.. onw problem that I dont0 understand is that I setup a mrsky but I continue getting white environment under the windows. Any idea ?
Tomorrow I will post some example
Help appreciated

buggsy
12-17-2007, 01:35 AM
Haven't posted here in a while. Have been working too hard and need a break and a creative challenge.

I have used:

4 area lights
1 radial light for sun
a luminance map for the embers in the fire place

Software :Electricimage and Photoshop
Rendering time :Way to long (12hrs)

http://www.gooddesign.com.au/Christmas_project_1.jpg

buggsy

pap87
12-17-2007, 05:00 AM
Hi everyone, amazing work so far!
Here's my contribution so far. Thought I'd give a daytime render a crack, so here goes.

http://i47.photobucket.com/albums/f177/pap87/004-1.jpg

This is just with a white material to get the lighting done first.
Then I added materials.

http://i47.photobucket.com/albums/f177/pap87/005-1.jpg

Rendertime was 1hr42mins at 1024 x 768, rendered with mentalray using mia materials and some lamberts. Used sun/sky with portal lights and fg and gi. I've got plenty of things to fix in this render.

Edit: I forgot to say, I made a hole in the wall opposite the fireplace to let more light in.

koolnits
12-17-2007, 07:47 AM
is there any compulsion to use 3dsmax default renderer? coz i can see maximum people are using Mental ray! and i am not good at that,can i use vray...:shrug:
one more question,is it late to participate?

jojo1975
12-17-2007, 08:30 AM
No it's not too late to partecipate and you can use every software you want ;)

musk
12-17-2007, 09:02 AM
@greyother:
I think you are looking for "multiply" not add or subtract.

Also - use "levels" to control the spread of the ambient occlusion. Not as accurate as actually changing the AO settings but an efficient way to control your AO pass.

Thanks greyother for the suggestion but I think blender doesn't offer me what you are suggesting. To use multiply I have to bake the AO Pass to a texture cause blender only allows add, substract or both for the built in AO calculation. I'm not sure if I want to do that cause UV Texturing the tree is going to be a pain in the b...t. I will have to experiment with it. I allready changed the AO Energy which gives a satisfiing result.

I do not understand what you ment with levels. Do you mean use AO on different render layers and composite them together later to control what actually gets AO and what doesn't? Or is this a special feature of the software and blender doesn't support it? Could you please explain.

@Jeremy: Thanks for the critic, just what I needed. I'm allready working on the treelighting. About the reflectivity of the ornaments, I added ray mirror and it seems that the mirror effect just doesn't display. Currently I'm experimenting with the fresnel effect on the raymirror shader and it seems to work on the balls but not on the star. It just doesn't come out that well. I'll post a pic as soons as I have access to my private computer.

MasterZap
12-17-2007, 10:16 AM
[/quote]




MasterZap - Nice work! You might rotate the tree more towards the camera, the back-side is so much sparser than the front that combined with being blown-out in the lighting, it really seems to fade away.

Thanks Jer ;)

Well, uneven trees is a fact of life. I was going for realism here, not so much "art". Hence the properly blown out "sky through window" and everything, all that is "fixable", but would diverge from what a real photo would show.

Besides, since I tend to chop down my own X-mas tree in our own rather small forest, I tend to be a begger more than a chooser, so we have all sorts of crazy shapes on our trees ;)

I've seen situations like the ball in the foreground, where the refraction looks completely different when DOF is turned on that when it's turned off.


Well, to be fair the middle image isn't the exact same image as the DOF ones.. it's just an earlier incarnation I dragged out for comparision to the two DOFfy ones, it doesn't have the exact same materials nor lighting.

If you truly want a DOF on/off comparision, it's here:

http://i51.photobucket.com/albums/f366/MasterZap/xul14b.jpg

http://i51.photobucket.com/albums/f366/MasterZap/xul14.jpg


I bet even if the DOF were adjusted so that the ball was in focus, it would still look different. I'm glad you're using bokeh.


Bokeh effects are fun, but does require quite a lot of DOF samples to be de-grained.

I'm planning on trying a variant with chromatic Bokeh for kicks. Stay tuned.


To sell a scene with convincing DOF usually you have to have something that the camera is focused on, so then it looks natural that the background or foreground falls out of focus.



True. I was going to put in a gnome or something on the shelf that would be natural to focus on, but I didn't have time.

Instead I tried this variant, which indeed gives me something to "focus" on. This yeilds a new problem, tho; I need to furnish the room ;)

http://i51.photobucket.com/albums/f366/MasterZap/xul15.jpg

/Z

loramel
12-17-2007, 10:20 AM
@musk

Hi musk, since I also use blender with this challenge I think I can give you my 2 cents concerning ao.
I think when greyother referred to multiply he regarded the combination mode in which the ao-pass would be applied to the image. You can do this in blender by also enabling the ao-pass in a render layer and use the compositor to apply the ao-pass there. The Mix-Node has a multiply operation.
The remark about the levels hints at the level-tool found in all image manipulation sw. Again you could use the ao-pass in the compositor feed it through a RGB-curves node ( which will provide you the effect found in the level tools).
I am still experimenting with the ao in my entry. I might completely drop it in favour of a ao-fake with a hemisphere of buffer shadow spots. Set up correctly this speeds up rendering time by a factor of ~20.

hope this helps.

tuffmutt1
12-17-2007, 12:16 PM
Hi all,

some nice stuff being done here....great challenge too.

heres my shot at it....

max9 and vray
http://img253.imageshack.us/img253/1306/xmasver001ukyi9.jpg (http://imageshack.us/)


and the lighting setup
http://img213.imageshack.us/img213/8258/lightingsetupqq8.jpg (http://imageshack.us/)

and a snowwhite version
http://img258.imageshack.us/img258/2187/xmassnowukpw0.jpg (http://imageshack.us/)

RDC
12-17-2007, 01:00 PM
Hi All,

This is the first time I have started a Lighting Challenge here and I'm really looking forward to it!

This is just a rough composition/layout I have at the moment to get a feel for what it might look like; however, it is probably bound to change over the next few weeks. The idea is to make the fireplace the point of intrest and have the rest of the scene (Christmas Tree) out-of-focus and having a nice Bokeh effect from the lights. The time of day at the moment is night with the Christmas Tree illuminating the majority of the room. I've decided that I won't be changing or added any extra models in the scene as of yet becuase I was hoping to make this a lighting and texture exercise. But this might change.. :-)

Anyway... all crits welcome!

Richard

http://forums.cgsociety.org/attachment.php?attachmentid=121570&stc=1

Render info

Software: Maya2008
Renderer: Mental Ray
Orginal image size: 1024x786
Render Time: 15-20min (ish)

Composited in Shake

(DOF and slight Barrel Distortion is a 2D effect at the moment)

musk
12-17-2007, 01:21 PM
[...]
I think when greyother referred to multiply he regarded the combination mode in which the ao-pass would be applied to the image. You can do this in blender by also enabling the ao-pass in a render layer and use the compositor to apply the ao-pass there. The Mix-Node has a multiply operation.
The remark about the levels hints at the level-tool found in all image manipulation sw. Again you could use the ao-pass in the compositor feed it through a RGB-curves node ( which will provide you the effect found in the level tools).
[...]
Thanks that helps a great bit. I think I'll stick with the AO since the rendering time isn't that much slower without it on my machine. What really kills rendering time is radiosity so I'm currently only applying it over night :D
Raytracing also adds a lot but I need it for my ornaments and the reflections in the windows. Maybe if I limit it to certain renderlayers it will be faster. hmm gotta try that.
Thanks again and great work so far everyone.

BTW for those interested I also put my stuff up on the blenderartists forum (http://blenderartists.org/forum/showthread.php?t=112196) for more software specific critiques.

loramel
12-17-2007, 03:09 PM
Here my next stage.

http://loramel.gmxhome.de/xmas/xmas_02.jpg

I created separate render layers for the following setups:
- scene lit fireplace lights
- scene lit moonlights
- scene without tree lit by tree candles
- tree lit by candles
- tree lightbulbs

http://loramel.gmxhome.de/xmas/render_layers.jpg

Furthermore I used object masks to extract the star and the glass balls to additonally tweak their appearance (make them more brighter, color correction etc.) and mixed them back in.

With this setup done I can compose the final image and can tune for my desired balance
of the various lights.

I tried to use an AO-pass as well, but until now are not satisfied with the results and even more so with the render time. theshakoone calls his p4 3ghz crap :eek:. What do you call then an athlon 1500+ with 768MB RAM :sad:. Anyway I settled with a fake ao by using many spotlights with buffer shadows.

The render time for a 600x800 image including all the compositing is now at 2 mins.

The next step will be to introduce mirroring in the windows and find a better shader for the
tree lights. The current method of using halos has the significant drawback, that halos do not seem to be raytraced and hence do not show up in the windows.

greyother
12-17-2007, 05:43 PM
Thanks that helps a great bit. I think I'll stick with the AO since the rendering time isn't that much slower without it on my machine. What really kills rendering time is radiosity so I'm currently only applying it over night :D
Raytracing also adds a lot but I need it for my ornaments and the reflections in the windows. Maybe if I limit it to certain renderlayers it will be faster. hmm gotta try that.
Thanks again and great work so far everyone.

BTW for those interested I also put my stuff up on the blenderartists forum (http://blenderartists.org/forum/showthread.php?t=112196) for more software specific critiques.

Yeah. What I mentioned has to do with compositing. Specifically you can use Shake or After Effects or any other compositor to "multiply" the darker values in the AO pass over your beauty pass. I tend to adjust the AO levels and change the opacity or add gaussian blur if necessary.

Jeremy, you mentioned a long time ago that a AO pass is unnecessary if you are rendering with GI and FG . . . is this true?
I have been using a "skylight" in max to generate AO (seems to be the only function for that light) but I wasn't sure if it was necessary since the other lights in the scene are "photometric" and they are calculating GI and FG automatically.

EDIT: You can use a shader to generate AO in max. Here is a link on how the AO shader works in Max:
http://www.christopher-thomas.net/pages/free_tutorials/tut_ambient_occlusion_shader/ct_tut_mentalray_ambientocclusion_shader.htm


Also, I am going to try splitting out my lights into different layers and I was hoping you could elaborate on the "3 pack" you mentioned at the Gnomon Workshop. Are you splitting out each light into an RGB pass or each light's shadows? Is this just for making masks for easier compositing?

EDIT 2: Has anyone successfully rendered out an AO pass out of Max?? I have tried using the skylight and I have tried rendering out the AO with the Ambient/Reflective Occlusion base material. No luck. I just get a black screen for every render.

sick73
12-17-2007, 08:09 PM
EDIT 2: Has anyone successfully rendered out an AO pass out of Max?? I have tried using the skylight and I have tried rendering out the AO with the Ambient/Reflective Occlusion base material. No luck. I just get a black screen for every render.

First page, first post i rendered an AO pass out of max but only for reference so needs a lot of adjustments.

method i used for the AO pass: set a standard material on everithing set diffuse color to white. add an Ambient/Reflective Occlusion material to the self ilumination box. on the environment, set the ambient lights to 0 (cero). MR renderer, no gi no fg no lights, hit render. all the adjustments necesary are within the AO material.

cheers.

MasterZap
12-17-2007, 08:31 PM
Here's a couple more experiments....

http://i51.photobucket.com/albums/f366/MasterZap/xul16.jpg

http://i51.photobucket.com/albums/f366/MasterZap/xul17.jpg

Trying to get some "feel" into it, warm/cold light, whatever... just tryin' some angles.... material/light setup pretty much as before...

/Z

kanooshka
12-17-2007, 09:06 PM
Hey everyone looking great just a few suggestions to try to help out-

theshakoon- looks good I like the floor a lot. And the material on the gifts. My one suggestion would be to make the sky more of a darker blue or purple color to capture the dusk feeling.

tuffmutt1- I love the saturated blue light coming through the window I think that inspired me to do some more of that. Any idea where that light is coming from? I personally think that it could use some softer shadows.

zatrix- Hi and welcome to the challenge! =) Good start but the way your composition is the image is split right in half. I've always been taught that you don't want to do that. As a fix maybe you could make your piece a vertical image and see where that takes you.

loramel- sounds like an interesting approach to AO. What I think is nice about an AO pass though is that for a still image you only need to render that once unless you change placement of objects or the camera angle. If you're set on the angle I don't think that should be too much of a problem.

For the glow issues I'd suggest turning glow off in your renderer and do it post processed. Jeremy showed a great trick of taking your image blurring it placing it on top of your sharper layer then setting the blend mode to screen. It requires some tweaking with levels but it looks good =)

masterzap- I like seeing the experimentation with angles. I know I said the same thing to zatrix but I think for both of your images a vertical composition would look spectacular, especially the bottom one. There's a lot of "dead" space on the left side.

greyother
12-17-2007, 09:07 PM
sick73 (http://forums.cgsociety.org/member.php?u=292053): Thanks for the help but plugging the Ambient/Reflective Occlusion material into the self-illumination box just gets me a render with a white material and plugging it into the diffuse color option box just gets me a black screen when I render.
I tried putting the ambocc material into the diffuse color option box in a simpler scene and it seemed to render just fine.

Is there any workflow tutorial for this? I must be making a simple mistake somewhere but I can't figure out where . . .

The first attachment is using the AO shader plugged into the diffuse color option box. The second attachment is using the AO shader plugged into the self-illumination.

Last attachment = x-mas scene rendered with AO shader in self-illumination.

jojo1975
12-17-2007, 09:29 PM
hello Master zap (or anyone else using MR) could you please share some tips for the bokeh effect and how you apply lume glare ? is that to apply on material or to camera ? Thanks in advance
Jojo (just experimentaing with MR)
http://img230.imageshack.us/img230/849/nighthk5.th.jpg (http://img230.imageshack.us/my.php?image=nighthk5.jpg)

kanooshka
12-18-2007, 12:48 AM
greyother- my suggestion for setting up the AO would be to do it in a separate pass but if you'd like to do it in the shader itself this is what I'd do. I use maya so this is what I do, but I'm sure different packages work similarly. There's 2 methods that will do the same thing. If you have a texture or a ramp or anything set on the color value of your shader you can open up to the attribute menu after selecting the texture and scroll down to color balance. Then all you need to do is plug the AO node into your color gain value. The second method is if you use a flat color. In that case all you need to do is plug an ambient occlusion node directly into the color section either setting the white value to the diffuse value or you can use a color remap. Hope this helps.

cosmonaut
12-18-2007, 03:32 AM
Nice work everyone, here's my first try at this, all done in blender (which I'm in the process of trying to learn). Definately needs a lot of work on the materials/maps but the lighting is coming along ... somewhat:

http://farm3.static.flickr.com/2131/2119716080_258a8ab386_o.jpg

greyother
12-18-2007, 06:07 AM
Turned up the area light outside a lot. Still haven't gotten the chance to split out my passes.

loramel
12-18-2007, 08:55 AM
kanooshka thanks for your comments.


...
loramel- sounds like an interesting approach to AO.
What I think is nice about an AO pass though is that for a still image you only need to render that once unless you change placement of objects or the camera angle. If you're set on the angle I don't think that should be too much of a problem.
...


It gives quite decent results and beats real ao in terms of rendertime. You could also render a lightmap with this setup and use it in the compositing just like an ao-pass.

Anyway I will try the ao-pass again and play around with tweaking it and compare it to the fake-ao


...
For the glow issues I'd suggest turning glow off in your renderer and do it post processed. Jeremy showed a great trick of taking your image blurring it placing it on top of your sharper layer then setting the blend mode to screen. It requires some tweaking with levels but it looks good =)
...


Yes you are right. As I apply this procedure already to the lights to achieve an even more glowier effect, I might as well abandon the halos completely.

Leotril
12-18-2007, 09:08 AM
Hello

Im using a group of area lights for the sky and moon with soft shadows , the pointlights on the tree are not shadowed also the fire lights cuz really affect the rendertime .. the shaders are all default for the moment only did some shading onthe floor wood texture

I hope to find a way to get the occ pass via texturing or something right now i cant geit to work neither in mr on renderman cuz i dont have enough mem on this pc my dads 256mb of ram lol ..

http://img212.imageshack.us/img212/1282/51504113gu0.jpg

musk
12-18-2007, 10:32 AM
Ok here is an update. I tweaked the energy level of most of the lights and I added the shadows back to the tree to get rid of that ambient lighting. I still haven't separated the AO pass out but I added the skycolor (dark blue) to it to give the impression of a moonlit room and give the whole scene a slight blue tint. Finally reflections in the windows are working.
Here is the current render:
http://img156.imageshack.us/img156/6853/xmaslights5nf5.jpg
Next are the wall textures and present textures.
I also have quite a problem with my lights. I can't seem to compose a decent glow effect with the blender compositor so those of you that know blender could you suggest what to improve.
Here are the links to a pic of the node setup and the images before the glare and after the glarenode setup:
http://img140.imageshack.us/img140/3568/nodesetup1vb4.jpg
http://img266.imageshack.us/img266/3889/nodeviewerpost1dm7.jpg
http://img266.imageshack.us/img266/1452/nodeviewerpre1ul6.jpg
The lights by themself look good but when I combine them with the other renderpass via the Z combine node the gloweffect looses it's power. Any help greatly appreciated.

loramel
12-18-2007, 11:06 AM
...
I also have quite a problem with my lights. I can't seem to compose a decent glow effect with the blender compositor so those of you that know blender could you suggest what to improve.
...

Hi musk. Nice mood you are creating with your image.

I think I might help you with your node setup.
The Glarenode itself looks quite ok, maybe use the add or screen operation in the mix node when combining the light and the blurred lights. You could even further improve the glare if you use a RGB Curves node on the blurred light where you can tweak the blur to introduce variations in color/shape.
To recombine your lights with the image you have to use the mix node with scrren instead of the z-combine. I am using the screen operation, but add might work as well.
z-combine is only useful if you have rendered objects seperately and want to combine them back into one image by observing their z values.

hope this helps.

MasterZap
12-18-2007, 01:32 PM
I had to introduce an old friend....

http://i51.photobucket.com/albums/f366/MasterZap/xul22.jpg


http://i51.photobucket.com/albums/f366/MasterZap/xul23.jpg

You can imagine him saying "Hmm, is there competition this year?", worried - like Woody in Toy Story - some newer, even shinier toy will take his place.

Or maybe he want's to go back into a parcel?

Or maybe he escaped one? Who knows.

/Z

60WE
12-18-2007, 01:40 PM
Hi,
here is my attempt to this scene. After having problems to render this one in maya (my machine is a bit outdated) and seems that maya requires a lot more memory to render scenes with over 1 million polys I had to switch to Luxology Modo renderer which seems to work pretty good.
This is my first try using modo to render a scene and of course I still have to discover and learn quite a lot about the program.

The light setup used:
1 spot (moon light)
1 point (fireplace light)
1 spot (fill light)
40 point (tree's bulbs)
2 color gradient for a bit of environment.

The render took 2h on P4-2.4ghz with 1.5 of ram.
Played a bit with curves in photoshop to give some more contrast.
I'd like to add something like a toy on the left side of the image close to the fireplace but still thinking about what and if I should, added a chair which I did for Hunted Hallway Challenge and works pretty well in this scene.
That's it so far...
Happy Holydays!
60

http://i157.photobucket.com/albums/t76/60WE/test_04.jpg

rezatayebi
12-18-2007, 01:54 PM
Wow.Great work everybody.
tuffmutt1: I love yours.

cambomb
12-18-2007, 09:54 PM
wow, some great stuff goin on here. I'm definitely gonna give this xmas challenge a whirl! I'm really digging the amount of feedback in this thread to, its a fantastic thing to see! I'll see if I can't help out asap as well!

pbalsic
12-18-2007, 11:04 PM
Hi!
Here's another version, I changed a few things but I kept color scheme and cartoony feel. I didn't use GI or FG because I want more control. I have 8 lights for the scene, and about 40 tree lights.

Great renders guys!

MasterZap: Very interesting angles, I like your renders... and your friend is cool!:)

tuffmutt1: That's fantastic! Maybe try to get a little bit more shadows.

http://img221.imageshack.us/img221/1072/xmas1fh0.jpg

L33tace
12-18-2007, 11:52 PM
L33tace - When I get time it would be interesting to see if I could make a set of smaller .obj files as an alternate format... For scenes with over a million polygons, a large .obj size is normal, since .obj is a text format that spells out line by line the X Y Z locations of each vertex.
Thanks for the offer Jeremy. I've managed to create groups in Carrra and export what I need to work on in Daz|Studio. I haven't had much time to do anything yet, done some tests in materials and lights and still deciding which program I want to use. :rolleyes: :)


Really great work being posted here - keep them coming. :)

theshakoone
12-19-2007, 05:30 AM
i added lights to my tree. took me forever to figure out how to make them glow the same color. this is actually an assignment for class so i dont have time to vary the colors right now (due tomorrow for extra credit), but will do so as i have more time during our break. also, i think the falloff on them is too near and they are not giving enough blueness to the tree (i could be wrong?) but then i see the blueness on the wall? is that from the strength of the light or the falloff?. im still using shadow maps, but i will put a render on when i sleep with raytrace shadows and see what i get. i need to fix the clouds outside, they look kind of weird.
rendered with mental ray, max 2008, fg on low, took about 40-50 min.


Master Zap: i tried the photometric exposure (i left the default values in) and it made my render really dark. if i use it do i need to pump up my lights or do i need to change anything under the photometric exposure values?
http://i198.photobucket.com/albums/aa106/theshakoone/lightsrender.jpg

omega3d
12-19-2007, 07:09 AM
Hey guys and gals!
http://i30.photobucket.com/albums/c347/omega3d/renders.jpg
Saw this challenge today, love the idea. Love christmas! I wanted to do this really quick for some fun. I apologize for not having much time after this, I am trying to manage this project, and last minute shopping haha. Trust me, I am a seasoned professional at late shopping :). Let me know what you think, Vray and max9. Love your guys' stuff. Decided that my first one was way too cold, so i dropped it. :) Then I went another direction :).

See you.
Jon

tuffmutt1
12-19-2007, 10:33 AM
Wow.Great work everybody.
tuffmutt1: I love yours.

thanks man...am still working on putting a bit more life in it...more lively.
may be i ll post the new ones in a day or two...:)

musk
12-19-2007, 10:43 AM
@pbalsic: Great render love the style with the light from the window. I just think the tree lights need to influence the color of the room some more.
@60WE: Great scene but I think the fireplace has too much bloom. It looks like you have some electircal lighting in there.
@loramel: Thanks for the info I'm allready experimenting. to see what I can do.

Everyone great work.

jojo1975
12-19-2007, 02:19 PM
Hey Master zap you didin't answer me in how to obtain glare ;) but I guess I've figured it out... this are my first MR try and I really have to admit which is very powerful (and also faster than I thought)
The light seems almost ok for the mood I wasnt to obtain
So there's the settings
=>MR sun + MR sky (night)
=>Photographics exsposure MIA materials (still to add textures but satisfied with the shaders)
=>One omni light (multiplier 100) in the fireplace
=>and one fill light (Multiplier 50) in front of the xmas tree
I've tried two angles (one is similar to first master zap since I wanted to test Glare)
I will still have to add DOF and probably I will use FumeFX (in scanline for the fire)
Comments are wellcome (especially about which angle to choose as final even if the mesh of the tree is not too good for close up)
When everything will be fixed I will try to make a sun animation


http://img57.imageshack.us/img57/7135/try2fd3.th.png (http://img57.imageshack.us/my.php?image=try2fd3.png)

http://img218.imageshack.us/img218/5743/try1tl7.th.jpg (http://img218.imageshack.us/my.php?image=try1tl7.jpg)

60WE
12-19-2007, 02:41 PM
@musk, thank you for your input, I like your last shot... just few considerations:
seems that you have a lot of light coming from outside and maybe that should affect the room also?
the reflection are working but I can't see tree's lights reflected, is it the camera angle?
it is also strange how the light from the fireplace spreads in the room right now seems (to me) tha you have a spotlight source coming from the roof.
Best regards
60

kanooshka
12-19-2007, 03:22 PM
Excellent work all.

This update I mainly worked on the fire and the fireplace. As a reference image I used this image at flickr: http://flickr.com/photos/micgormit/332433665/

My lighting setup is as follows:
13 volume lights for the christmas lights
13 spotlights lights for the sky
2 pointlights in the fireplace
3 spotlight bouncelights
1 directional light
and an ambient occlusion layer

No FG or GI as of yet

The entire render took: 57:00
the majority of that being the sky fill layer taking: 23:24 I need to optimize that layer alot

http://dockay.com/LightingChallenge_Christmas/Christmas_04Fire.jpg

leojS
12-19-2007, 04:54 PM
Great renders everyone!!

@musk: Great to see someone using Blender! You have quite a nice looking scene so far, and the lighting is coming along nicely. However, it seems rather "empty" in front of the fire. Maybe you could add a rug or even just change the angle? The sky outside the windows seems a bit to bright I think.

@MasterZap: What can I say, this is a really awesome idea!!! I think I prefer the first image, maybe a little less DOF would be better I'm not sure... Also I think it's the stocking (?) that's hanging in front of the fire look's a bit out-of-place as you can't really tell what it is. You could probably do with toning down the intensity of the fire.

@60WE: I really like the "moonlit" look to this one... however I think the chair looks a bit flatly shaded, also I think it would be nice if the fire had a more orangey glow to it as it would contrast nicely with the more washed out moonlight.

@pbalsic: The lighting in yours is really quite amazing... maybe the lights on the christmas tree could be multicoloured, rather than just all the same? Also I think perhaps you should experiment with some other angles...

@theshakoone: Quite nice, I like the floor especially. Yeah the clouds do look rather strange, also you should maybe add some reflections in the windows. Again it would be nice to see some different coloured lights on the tree - just to make it a bit more interesting. Also if you have time you might want to add some ornaments/christmas cards/whatever to the mantelpiece above the fireplace.

@omega3d: Some interesting angles you've got there. You definately need to turn on anti-aliasing though! I think you need a bit more contrast as well...

@jojo1975: Quite a nice angle. Maybe try adding some DOF effect? I like the way the star is glowing but perhaps it's a bit too much! The floor is also a bit too shiny... Where's the fire?:rolleyes: At the moment it looks as if light is magically appearing from the fireplace!
As for your second image, I think you need to be able to see something in the reflection of the ball, otherwise it's a little bit pointless if you see what I mean... Again the floor is has a bit too much specularity.

@kanooshka: :eek: WOW - long render time!! I really like the look of your fire. Maybe consider adding a rug of some sort in front of the fire? It might be just the way my monitor's calibrated, but it seems a little bit too dark.

Phew! I'd better stop before I comment on all the pictures in the entire thread!! Actually I can't help but comment on loramel's:

@loramel: Another one using Blender - woo! I must say I really like the lighting in your render. One thing I think you might need to add a door to the doorway. Also you need reflections in the windows.

I think I might actually have a go at this myself - if I get time that is - so watch this space guys!!

loramel
12-19-2007, 08:23 PM
Great work done by everyone, congratulations. And a lot to learn too.

Here is my next update.

I changed the material settings for the candles and introduced now full reflections in the windows.

Furthermore I had to decide on the general color scheme used in this room. To spare me the tedious work of setting up new shaders and wait for the render to be finished, I setup the scene with the important objects assigned a dummy shader and let blender generate me object masks for all the items I wanted to be part in my color scheme.
Using the compositor I was then able to apply whatever color I wanted to specific items (wall, floor, window frame ...). The result is visible instantaneous and gave me a quick tool to investigate the mood my colors were giving me.
As this particular christmas setup is decidedly anglo-american, I had no immediately knowledge about how colors where used in these surroundings. So I went for a dark heavy, but warm look, often found here in the old farmhouses in the mountains (alps, tyrol).

Here you see an image strip with some color variations starting with the base image without color applied only the lighting.

http://loramel.gmxhome.de/xmas/colors.jpg

And here is the rendered image now with shaders and textures set up for some of the objects.

Current setup is as follows:

lighting:




fireplace: 3 pointlights, 1 spot and 1 hemilight
moon: 2 spotlights with buffer shadows
candles: 40 spotlights with buffer shadows placed at the locations of the candles using a wide angle (gives fake ao) and NOT illuminating the tree. 38 point light at the candle locations exclusivly lighting the tree.
5 renderlayers:

light from the fireplace and reflections
moonlight
candle light affecting the room and interior
candle light only lighting the tree
candles with blur
using object masks I extracted the following object and mixed back in:

big star
glass balls; more accentuation and added minor highlight blur.
Raytracing used only for tree balls and windows.

Rendertime for a 600x800 (incl. compositing) on a athlon 1.2Ghz 768MB ~15min.

http://loramel.gmxhome.de/xmas/xmas_04.jpg

THeNeMeSiS6SiC6
12-19-2007, 10:33 PM
http://img99.imageshack.us/img99/4863/merryfnchristmasss8.th.jpg (http://img99.imageshack.us/my.php?image=merryfnchristmasss8.jpg)

This is my 1st post here because my teacher encouraged me to enter this in the lighting challenge. I had a couple of ideas and this seemed to be the easiest one to pull off. I got the inspiration from not seeing anything like this. Someone out there has to have an imagination as twisted as mine.... My second idea was to have the room lit like a bright & cheery X-Mas morning, with the exception of the guy lying in front of the tree with a shotgun in his right hand, a hole in the back of his head big enough for a small cat to curl up in, and the tree is covered in blood and brain matter.... But I'm not yet good enough for something that complicated....

eldritch48
12-20-2007, 01:24 AM
Here's my updated version...still think the shadows around the fireplace are a bit dark, but that comes down to the choice between cinematic and actual "reality"...I guess I went more towards "actual".

Adjusted the angle, and boosted up the fill lighting a bit. Rendered in Vue on GI setting at 1600x1000, took about 3.5 hours.

http://www.pinatagod.com/gallery2/main.php?g2_itemId=4569
(http://http://www.pinatagod.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=4570&g2_serialNumber=2)

kanooshka
12-20-2007, 03:14 AM
loramel- Looking great! I love the warm feeling of the fireplace. There's just a couple areas that are bothering me. A couple places look like they should have shadows but they don't. One spot would be where the fireplace touches the floor and the other would be where the ceiling meets the wall. Another thing I noticed is the ceiling has nice orange light cast on it but the wall doesn't. maybe adding a spotlight shining across the room to add some more orange would make this image that much stronger =)

loramel
12-20-2007, 09:02 AM
Thanks for the feedback kanooshka.


...
A couple places look like they should have shadows but they don't. One spot would be where the fireplace touches the floor and the other would be where the ceiling meets the wall.
...

Ahhh, yes you put a finger in an open wound :scream:. Looks like my fake ao approach isn't working after all.


...
Another thing I noticed is the ceiling has nice orange light cast on it but the wall doesn't. maybe adding a spotlight shining across the room to add some more orange would make this image that much stronger =)
...


Yes, that one's bothering me too. For the orange light bouncing from the floor I used a hemilight, which incidently has a direction information (mainly up in this case). So the walls being perpendicular to the ceiling, get only a fraction of the intended glow :sad:... - I have to find a better solution for this.

musk
12-20-2007, 09:15 AM
[...]
Yes, that one's bothering me too. For the orange light bouncing from the floor I used a hemilight, which incidently has a direction information (mainly up in this case). So the walls being perpendicular to the ceiling, get only a fraction of the intended glow :sad:... - I have to find a better solution for this.

So you are not using any shadows on the bounce lights since Hemilights don't cast shadows in Blender or are you using one of the experimental builds with the added softshadows?

So is it best to not let bounce light produce shadows? I'm having a problem in my current render with the socks casting a strong shadow on the chimney. I think the shadows should be there but a lot less intense which is one of the things still on my todo list for this scene.

Loramel you could always take AO pass into the compositor and mask part of it and mutliply that to the parts of the walls that need more glow (at least in theory :) )
BTW I like the second color scheme the best but I think the tree looks a little dull with just one kind of ornaments but that is a matter of taste not of lightning ;).

tuffmutt1
12-20-2007, 10:23 AM
Hi all...here's a fake DOF version...long way to go...but thought might post it for some feedback:)
http://img337.imageshack.us/img337/2270/zblurfakeudaykadkadear4.jpg (http://imageshack.us/)

the fishies are from under the boardwalk challenge...:)

and another post here..
http://img254.imageshack.us/img254/1461/zblurfake2udaykadkadeuv7.jpg (http://imageshack.us/)

pap87
12-20-2007, 10:47 AM
tuffmutt- really nice looking render the first one. Then you had to go and kill it with the cheesy lens flares, please give your render the respect it deserves and take them off! :D Seriously though they stand out too much and clash for attention with the fishbowl decoration.
There's some bad anti-aliasing but I reckon the fishbowl idea is really cool.

tuffmutt1
12-20-2007, 01:12 PM
tuffmutt- really nice looking render the first one. Then you had to go and kill it with the cheesy lens flares, please give your render the respect it deserves and take them off! :D Seriously though they stand out too much and clash for attention with the fishbowl decoration.
There's some bad anti-aliasing but I reckon the fishbowl idea is really cool.

LOL!!!:eek:
was just playing with them renders...
will post one with true 3d DOF soon...

pbalsic
12-20-2007, 01:32 PM
tuffmutt - Great idea with those fish, and amazing renders!!!:thumbsup:

loramel
12-20-2007, 01:46 PM
So you are not using any shadows on the bounce lights since Hemilights don't cast shadows in Blender or are you using one of the experimental builds with the added softshadows?

Yes, I do not use shadows in the bounce lights (until now that is), since the shadows resulting from the bounce light are quite dim and I was hoping to get away with some ao or fake ao in my case. I am using plain 2.45 blender by the way.


So is it best to not let bounce light produce shadows? I'm having a problem in my current render with the socks casting a strong shadow on the chimney. I think the shadows should be there but a lot less intense which is one of the things still on my todo list for this scene.

As it turned out for me not using any shadows at all might not be a good idea after all. I am just now experimenting to subsitute the bounce lights with area lights (long render times :sad: ) and using an ao pass to get better shadows.

My first experiments showed that even with an area light on the floor for the orange bounce light you get the uneven lighting of the walls and ceiling, so I accept this for the time being.

BTW I like the second color scheme the best but I think the tree looks a little dull with just one kind of ornaments but that is a matter of taste not of lightning ;).
... as a matter of fact, I abhor glass balls on my christmas tree, so if I have to have them, they have to stay the same color :)

alwalid3d
12-20-2007, 02:08 PM
Thanks Jer ;)


http://i51.photobucket.com/albums/f366/MasterZap/xul15.jpg

/Z[/QUOTE]


Wonderful lights located inside the tree
We talked possible mode of operation
Thank you

kanooshka
12-20-2007, 02:14 PM
musk- A great way to lighten a shadow would be to add a bounce light from the floor or wall bouncing onto the shadow. This also stays true to what actually happens in real life. For example if you see somethings shadow in the day time it is a fairly harsh shadow (depending on the weather) but there is blue sky light that softens it.

cosmonaut
12-20-2007, 02:52 PM
Here's my second try at this. Tried to add more contrast to the lighting and added a bunch of materials. Also added raytraced shadows to the tree lights. Added some DOF and glow in post. Still having trouble with the maps on the fireplace and the wood material on the chest but I'm still learning blender. Love those fish tuffmutt1.

http://farm3.static.flickr.com/2252/2124962692_4cb782fc2c_o.jpg

leojS
12-20-2007, 04:14 PM
@cosmonaut: Wow that's a really nice render!! A couple of things I noticed: the sock looks a bit "plasticy" at the moment, perhaps you could give it a knitted texture or something. Also the colour of the outside sky looks too bright for the brightness level of the room.

@alwalid3d: Nice image! The room reflected in the ball looks a bit empty though, think of something interesting to place there. Otherwise it's looking quite good.

gattaca13
12-20-2007, 04:37 PM
Tuffmutt1,
I really love your idea! Be careful when doing some editing in photoshop though. It looks like you have some aliasing on the edges of all of your shapes. It shows especially on the ornament. You can easily do all those effects in your software package instead of having to do extra work in compositing.
I kinda dig the lens flares, but i think you should tone them down a bit. Make it more of a small glare than a huge flare.
I really love the fish! Really great and creative! On the ornament itself, I think you should work more on a reflection on the surface. You did a nice job of letting us see through the ornament, now we need a front reflection. It looks flat without it. Go to a pet store and look into a fish bowl. You can see yourself and the background when you look into it. The same thing applies here.
It looks like you haven't gotten to the metal holder on the ornament yet. It looks like you just put a yellow shader on it. Work on making it more metallic.

Looks great though!! :D

sick73
12-20-2007, 05:57 PM
congrats to all, great renders.

I´m still going for the photorealistic chirstmas morning.

sunlight system. mr sun, mr sky.
one photometric point light in the fireplace.
gi with 1,000,000 photons.
fg.
aded glow shader in the self iluim to the material for the light bulbs.

mental ray, 3ds max.
no photoshop.

im still not likeing the composition nor the tree lightning. and know i still need better color sheme with the materials in the scene. but here goes.

cheers.

http://robertograham.com/images6/chrismas03.jpg

sick73
12-20-2007, 08:33 PM
same as previous post.
mental ray
3dsmax

mr sun
mr sky
point light fireplace
glow shader in light bulbs
gi
fg

only played around with the materials.

cheers.


http://robertograham.com/images6/chrismas05.jpg

kanooshka
12-20-2007, 10:27 PM
update! =)

Most of the changes in this update were made to the lighting on the christmas tree itself. I added strong rims through the needles on the fire side as well as put some blue and orange fillights on the front of the tree. I also darkened both the moonlight and the skylight.

For the skylight I reduced the rendertime drastically. I realized in this render I did not need raytracing nor did I need to use mental ray area lights attached to my spots. I instead just used depth mapped shadows and for the subtle effect I needed it worked perfectly.

I'm still not liking how the christmas lights look. Any suggestions?

Next update materials and models!

All spotlights and pointlights used and volumelights for the christmas lights.
Rendertime about 40 minutes on an Intel Xeon 2.0GHz


http://dockay.com/LightingChallenge_Christmas/Christmas_05treebounces.jpg

Buzzoff
12-21-2007, 02:53 AM
The LW version of the tree is over half a kilometer tall.

alwalid3d
12-21-2007, 03:52 AM
Latest developments
Although I am not convincing

http://www.reem-qs.com/up-pic/uploads/1f3df79507.jpg (http://www.reem-qs.com/up-pic)

greyother
12-21-2007, 09:24 AM
kanooshka (http://forums.cgsociety.org/member.php?u=212966): That is really turning out nice. I like your x-mas lights actually. Is there any way to get a screenshot of your lighting arrangement? Really impressive progress. I really like the grate around the fireplace.

THeNeMeSiS6SiC6 (http://forums.cgsociety.org/member.php?u=306952) and tuffmutt1 (http://forums.cgsociety.org/member.php?u=11385): There should be a "most original twist" category for you guys.

theshakoone (http://forums.cgsociety.org/member.php?u=306528): The blue light is pretty overwhelming on that tree. The falloff is what is allowing the light to reach that far, so turn it down if you don't want the tree lights to cast light against the wall. I recommend using raytraced shadows for the treelights but it really does increase the render time substantially.

MasterZap (http://forums.cgsociety.org/member.php?u=5803): You have inspired me for the direction of my next render.

Amazing work everyone!

rezatayebi
12-21-2007, 01:44 PM
tuffmutt1 : Looks really nice. The idea of fishes reminds me of the persian`s new year celebration. http://www.pic4ever.com/images/Ghelyon.gif

I started working on the scene an hour ago. Unfortunately I don`t have any gifts wrapping paper (I`m not sure if that`s the right word!) textures. I was hoping maybe you guys could help me

L33tace
12-21-2007, 07:45 PM
I started working on the scene an hour ago. Unfortunately I don`t have any gifts wrapping paper (I`m not sure if that`s the right word!) textures. I was hoping maybe you guys could help me
try here http://www.cgtextures.com/

kanooshka
12-21-2007, 07:48 PM
Thanks greyother! =D

Here is my lighting setup:

http://dockay.com/LightingChallenge_Christmas/lightingsetup.jpg

alwalid3d
12-22-2007, 06:33 AM
Thanks greyother! =D

Here is my lighting setup:



Thank you
To the settings have benefited them
In particular tree lighting

rezatayebi
12-22-2007, 12:10 PM
try here http://www.cgtextures.com/

Thanks.

here`s my first try. Still needs a lot of work on texturing and lightning.
I used mental ray`s Lens shader. It cost me 2 hours of render time on my Mac pro and I just don`t like the result.

Maya 2008 (on Leopard)
Mental ray
a Directional light for the sky, an area light for photons, 2 ponit lights for fireplace, a point light inside the tree and a spotlight
Render time: 2:28 h

http://i18.tinypic.com/81t8iti.jpg

60WE
12-22-2007, 03:34 PM
Here is some more work on the scene.
Added a couple of light sources to lit a bit more the chair.
Probably I have to give more light to the tree even if I like it pretty much dark but maybe it needs some.
Added a tricycle and a light which project a window shape.

http://i157.photobucket.com/albums/t76/60WE/test_07.jpg

And here a variant to simulate an old looking card (just for fun)

http://i157.photobucket.com/albums/t76/60WE/christ_old_look.jpg

@leojS: Thanks a lot for your comments!
@kanooshka: That's a nice render and I also like the details you have in your tree's light even if maybe a less saturated color should do a better job!

Cheers
60

bmorcos
12-22-2007, 04:34 PM
Hello everyone,
Here is my first try..
I am using Softimage|XSI and Compositing , mental ray and Photshop.

http://img260.imageshack.us/img260/5289/rendercomp1oo6.jpg (http://imageshack.us)


all C&C are welcomed!!
=======================
Bassem Atef
CG Portfolio (http://bsbs.cgsociety.org/gallery/)
Demo Reel (http://files.filefront.com/Bassem_Promo_2007.mov/;8174185;/fileinfo.html)

MinaRagaie
12-22-2007, 05:20 PM
kanooshka- so... some of us did find the time to jump in challenege 13 already :) nice work keep it up :thumbsup:

BsBs- Miss you alot :) you should come visit us sometime. Nice work as usual.. I bet the hard shadows from the light outside the window are either meant to look so or being fixed as we speak ;)

-Mina

loramel
12-22-2007, 07:45 PM
Here goes my next update.

No further work done yet on shaders and textures.

I explored several other methods of lighting including large area lights instead of the buffer shadow spots. I also tried to incorporate AO into the image, which let me stray far from my path. For those using blender, you might be interested in this thread (http://blenderartists.org/forum/showthread.php?t=112603) where I finally was able to use the compositor to include the AO pass as it is done in the internal renderer.

Alas I experienced that AO in this scene is not adequate. As far as I understand AO, it is calculated by postulating an uniform light source (sky) and for each point the occlusion of this light by other objects is calculated and a map generated.
In this scene there is no uniform light source. So maybe one could render a hdri probe and use this as texture to the sky, but I have no idea if this would actually work.

So in the end I used only spotlights and point lights and rearranged the renderlayers and the compositing.

kanooshka: I like your lighting setup. As you are now also using only spotlights and pointlights I am feeling quite encouraged with my setup and decision to skip any higher level light types.

Here is the next image
http://loramel.gmxhome.de/xmas/xmas_05.jpg

and just for fun a more sparkling version
http://loramel.gmxhome.de/xmas/xmas_05_sparkle.jpg

kanooshka
12-22-2007, 08:04 PM
alwalid3d: Thanks, much appreciated!

rezatayebi: Nice start. Your lighting matches very well with your backplate. I'd say that your image is a bit too blurry. Between your bokeh and glow it seems a bit much.

60WE: Thanks for the compliment! I love the props you've added to your scene it brings a more life to it. It looks as if you're trying to keep to cool colors but I might suggest the fire to be more red/orange. Also, I feel the blur is a bit too much.

BsBs: That's pretty solid for a first try :) I love how the ornaments look so far. Also your firelight looks very nice. I look forward to the next step.

Mina: glad you could make it! Good luck :D

Loramel: Glad I could be of encouragement. Your firelight is beautiful so far, especailly the way it shines on the floor. Perhaps making it a little brighter. The christmas lights also look very nice. Maybe some more color variation?

To clarify about AO: AO doesn't take any lighting into account all AO does is calculate the distance between objects. The closer objects are together the darker the occlusion is. So AO isn't really needed for lights that cast shadows or direct lights such as the sun or lightbulbs. It would be more used for bounce lights or fill lights that may not use shadows. Hope I could help =)

jeremybirn
12-23-2007, 12:01 PM
I'm back in Albany, New York for Christmas this week! So many great renders here! Sorry that in wrapping up work and travelling I fell so far behind on feedback...

loramel - Nice job! I think the shadowing needs work, look at the fire light being cast onto the floor by the base of the fireplace. Some shadowing or occlusion around the door in the foreground would be good, maybe there's more light in the room with the fire so the shadows come towards us? Fill light levels are good in most areas, it's going too black to the right of the fireplace. For really shiney, reflective things like the decorations and star, try using very low diffuse values or a dark base color, so that the highlights and reflections can be the main source of brightness.

BsBs - Great scene, I like the colors. The tree itself looks very ambiently lit, as if light is glowing right through it. Try to get some shadows or tighten the decay around the lights or something to concentrate and limit the light. Also, the balls look washed out, try to get some contrast in the reflections on them.

60WE - Nice scene! I think you could let some of the darks go darker, and get some more contrast into the lighting on the walls especially.

rezatayebi - Nice scene! I like the familiar Paris backdrop. :) I wish parts of the tree, some of the pine needles went darker, right now they all look so evenly lit, even between the lights.

alwalid3d - Good start! A lot of the scene looks very evenly and brightly lit. Try to focus on setting up lights from specific sources (fire, tree, moon, etc.) one at a time, and getting nice shadows and aiming and coloring the lights to really convince people that the light comes from that source.

Buzzoff - If you can make a better LWO version and transfer it to me, I'd be happy to host it.

kanooshka - Nice job! I think right around the fire, I expect the edge of the floor beneath the base of the fireplace to get darker in shadow, but someone it looks bright all the way up to the edge? Maybe it's just that the floor doesn't seem to be textured, the floor looks more brightly reflective than the balls on the tree. Don't change too much about the tree because it has a really nice feeling to it, but I think a few more colored lights could be put into it in the upper part of what's visible.

sick73 -Welcome! That's a good start. I think the impression of lights in the tree need work: maybe the lights in the tree shouldn't illuminate that big an area, compared to the direct sunlight in the scene, and the illumination should be more concentrated right near the bulb.

-jeremy

rezatayebi
12-23-2007, 12:54 PM
Jeremy and kanooshka , Thanks for the comments.http://www.pic4ever.com/images/give_rose.gif

Here`s the same scene (with small changes) without the DOF.
http://i11.tinypic.com/6tdid0n.jpg

swag
12-23-2007, 08:15 PM
here is first wip - more wips and breakdowns after xmas - have nice xmas time
rendering with 3delight 7.0
http://www.swag3d.com/cgtalk/xmasTree01.jpg

ValerKa
12-23-2007, 09:31 PM
I try to join to you people :) But i live in Krasnodar\Russia, and for new year remain not enough time..and coming soon exam`s. But i try! My 3D skill i hope will be enought :scream:

PS: Good Luck 2all.

leojS
12-23-2007, 09:36 PM
Another bunch of great renders and updates!! :thumbsup:

@swag: Great start... Some work needs to be done on the shading of the needles as they look a bit "flat" at the moment. And maybe consider adding different coloured lights on the tree - just for a bit of variation.

@rezatayebi: Nice backdrop! It seems that a lot of the objects in your scene are flatly lighted, i.e. the wood panels on the wall and the pines of the tree. I think some contrast is missing, which is possibly why it looks a bit "washed out" at the moment.

@loramel: Keep the good work up... I quite like the "sparkling" one, although it might be a little bit cheesy! I think you need to work on the doorway a bit, as it looks a bit out of place as it is now - maybe add a wood texture or something?

@BsBs: Simply beautiful! I really like the blue-ish outside backdrop, but the blue light doesn't seem to get into the room.

@60WE: This is turning out really well! I really like the DOF and the presents you've added to the foreground. The "old card" version looks quite good, but the scratches and dust look a bit cheesy. Have you considered adding a wooden texture to the chair?

jeremybirn
12-24-2007, 12:04 AM
I try to join to you people :) But i live in Krasnodar\Russia, and for new year remain not enough time..and coming soon exam`s. But i try! My 3D skill i hope will be enought :scream:

PS: Good Luck 2all.

Deadline for the contest is January 31, 2008. You have more than a month.

-jeremy

floze
12-24-2007, 01:22 AM
I'm still not quite satisfied with my result, I'll maybe render an update in some days.. just didnt want to miss the chance to wish you guys a merry christmas and happy holidays before its too late! :wavey: Peace!

http://individual.floze.de/fileadmin/files/cgtalk/christmas_floze.jpg

edit: Its made with Maya, mental ray and Photoshop. And lots of Mayang's textures. :)

redbyte
12-24-2007, 01:29 AM
^ ^

My favourite so far!!
I think you and MasterZap are going to have battle this thing out for top prize.
Both of you have done well to portray warm lighting. But this is my favourite because it has such nice colours that compliment each other as well as that cool effect you've put over it.

Phantom-vfx
12-24-2007, 01:34 AM
Hi there , happy xmas !!
I attach another render and bdowns , made in Maya, final Render and Fusion.
http://www.phantom-vfx.com/gallery/bdowns_3d.jpg
http://www.phantom-vfx.com/gallery/bdowns_comp.jpg
http://www.phantom-vfx.com/gallery/Render_phantom.jpg


C&C Please !

jojo1975
12-24-2007, 08:28 AM
wow we hit first page there's another try with MR.
So the angle is decided the glare also
started to put materials
More message with explaination CC are wellcome (I still have doubt about the color of the light)
http://img508.imageshack.us/img508/595/3glaremt9.th.png (http://img508.imageshack.us/my.php?image=3glaremt9.png)

tuffmutt1
12-24-2007, 09:12 AM
hi all heres some new renders...
I cluttered the room so it felt more like "lived in" not "just moved in".
I d recommend everyone to do it so it fills up and looks more natural.
some models are made by me , some are free models off the web.
it also gives more room to be creative and personalise with the use of the main scene.


http://img407.imageshack.us/img407/5175/xmas13kadkadestraightuc3.jpg (http://imageshack.us/)

another a bit toppish...glow added on bulbs and tiny lights in post
http://img407.imageshack.us/img407/475/xmas13kadkadeglowpw2.jpg (http://imageshack.us/)

tuffmutt1
12-24-2007, 09:16 AM
heres a midshot of the fireplace....no post
http://img151.imageshack.us/img151/4339/xmas13kadkadefpnopostgg0.jpg (http://imageshack.us/)

and a bit closer with some cc
http://img151.imageshack.us/img151/7858/xmas13kadkadefireplacecw2.jpg (http://imageshack.us/)

tuffmutt1
12-24-2007, 09:20 AM
heres another angle with tiny lensplares added...
http://img172.imageshack.us/img172/1650/xmas13kadkadestarglowip5.jpg (http://imageshack.us/)

and one of the gifts area with no post effects..
http://img505.imageshack.us/img505/6599/xmas13kadkadenopostzb1.jpg (http://imageshack.us/)
http://img505.imageshack.us/img505/6599/xmas13kadkadenopostzb1.fc37b481bc.jpg (http://g.imageshack.us/g.php?h=505&i=xmas13kadkadenopostzb1.jpg)

tuffmutt1
12-24-2007, 09:23 AM
and an older daytime lighting setup..with bokeh. took over 3 hours to render and still grainy...LOL!
http://img519.imageshack.us/img519/9739/bokehvrayudaykadkadehw2.jpg (http://imageshack.us/)
http://img519.imageshack.us/img519/9739/bokehvrayudaykadkadehw2.e0711f3d0c.jpg (http://g.imageshack.us/g.php?h=519&i=bokehvrayudaykadkadehw2.jpg)

tuffmutt1
12-24-2007, 09:35 AM
Thanks everyone for all your kind words.... i wish you all a merry christmas and an awesome new year...and keep posting those great images...

Uday Kadkade...

MasterZap
12-24-2007, 10:20 AM
LOL, love the fish-tank-balls thingy.

Here's a slight update... pretty much the same but less light in them thar fire....

http://i51.photobucket.com/albums/f366/MasterZap/xul27.jpg

MERRY X-MAS EVERYBODY

Oh yeah, obligatory X-mas link (from my old band) (http://www.beatsymphony.com/xmas)

/Z

Jozvex
12-24-2007, 11:15 AM
Wow great work everyone! Love your latest one Zappo ol' chap. I only found this latest challenge today but I'll try and enter!

Merry Christmas and a DOFy new year!

:thumbsup:

WGerick
12-24-2007, 12:33 PM
Here is my entry:
http://www.derwanja.de/LightingChallenge_FINAL.jpg

Rendered in Max with VRay.

Lights:

HDR - Background
VRay Light for the moon
VRay Light for the fireplace
VRay Light for the extra room
The lights on the trees are IES lights.

Rendering:

I used Global Illumination but had to brake the scene in layers.

GI for the tree:
Irradiance Map and Light Cache

GI for the Room:
Just Light Cache

Almost all of the materials have glossy reflections.
The fire and the highlights on the christmas lights were added in fusion.

I splitted the whole scene in its elements, so I could tweak the lighting of all the lights, as well as the overall influence of GI and direct light.

I hope you like it.

floze
12-24-2007, 01:00 PM
Oh yeah, obligatory X-mas link (from my old band) (http://www.beatsymphony.com/xmas)

/Z
Haha thanks man, its hilarious! :D
Love the dancing santa!

CGmm
12-24-2007, 02:23 PM
Hi, Jeremy and all.
Thank you for a very nice scene, and lots of great rendering.

I wanted to submit what I got so far,
since It is already a xmas eve here.
http://www.seijimm.com/xmas011.jpg

Pointlights around the tree, fireplace, on the dresser, and close to the door.
One directional light from right to left.
Mia_materials with FG (Maya, MentalRay).
Photoshop for color correction and additional noise.

Any comments are welcome. Merry Christmas!

jojo1975
12-24-2007, 02:28 PM
Sorry There's the image
http://www.webalice.it/giorgio.luciano/CGTALK/3glare.png

kanooshka
12-24-2007, 03:34 PM
Looking excellent everyone! Happy Holidays!

mash1000
12-24-2007, 03:41 PM
T-R, I love the climat of your work - 5* from me

RazorJack
12-24-2007, 06:38 PM
Here's some Christmas mood from me :)
Brutal :twisted:

http://img406.imageshack.us/img406/1981/renderaz0.jpg

Rendered with Vray in about 2 hours on Q6600 @ 3300 mhz.
IR map and light cache, but the lights don't use the IR map, i left them on subdivision and the IR map on low quality.
There are 2 Vray lights - one for the moon and one in the fireplace.
The tree lights are Vray light material (it's easyest that way :) )
The bricks are displaced.
and ... well i think ... that's it :)
i wanted to post it for Christmas but i'll probably fix a few things and post an update later.

METAL CHRISTMAS AND HEAVY NEW YEAR! :twisted:

methodz
12-24-2007, 07:26 PM
Pbalsic: i like your walpaper and the rug very nice.. i was thinking of doing a moonlit kidna lighting aswell.. but i'm not sure i'm going ot be doin this one.. good luck guys..

methodz
12-24-2007, 07:27 PM
RazorJack: DOOOOOD haha thats sweet man i like your idea.. very nice!

MrWilde
12-24-2007, 11:41 PM
My poor attempt. ;)

http://img442.imageshack.us/img442/8466/merryxmas02cp8.jpg

Done in LightWave 9.2, ray traced shadows and reflections, and radiosity (Final Gather interpolated), one volumetric light.

Athlon X2 6000+, 2GB RAM, 8800 GTS 640MB, Rendertime 60min at 1440x800 px.
The lens flares and fire are added in Photoshop.

An area light for the fireplace, another area light to fake the light coming from the christmas tree, a point light (10%) in the middle of the room, and a volumetric spot light for the light coming from the outside (volumetrics in a seperate pass and composited together in PS). The rest is done by radiosity.

L33tace
12-25-2007, 12:36 AM
great images everyone.

http://homepage.eircom.net/%7Ecasstify/xmas1.jpg
WIP in Carrara 6 Pro. 3 lights - 2 bulbs and one spot light to give off a glow effect at the top of the tree. i can use bulbs because the scale of the model is small. i also used a sky light. Dell XPS M1710.

Happy Christmas everyone! :)

ValerKa
12-25-2007, 06:49 AM
RazorJack ohohohoho... somthing breaking stereotype :D that`s was too bravely, good ;)

methodz
12-25-2007, 07:29 AM
Mr. Wilde: i think you did an excelent job.. only you could have added a few textures.. the walls.. a few different gift wrappings.. maybe a displacement for the fireplace bricks... over all great atmosphere.. i like the snow outside the window too.. fire looks great..

garphik
12-25-2007, 12:35 PM
great topic, gotta work on this one :D

ramonesFAN
12-25-2007, 02:06 PM
Holà mates!

This is my entry "image":
http://xs322.xs.to/xs322/07522/test1.jpg
Only a supermegafast test of scene an lights ^^ .
Absolutly far from something definitive!!

I'm working with 3ds Max 2008 and Maxwell Render 1.6
I prefer daylight illumination..when you wake up on a 25december sunny and snowy morning ^^
(I don't know if I would switch on the tree lights)

Merry Chritmas!

EDIT: Rlly thanks to Jeremy Birn, the scene modeller ;)
Great work!

RazorJack
12-25-2007, 03:26 PM
Ok, here's my final version for the challenge.

I just fixed a few things (like polys with wrong normals) and added some lens falre effects in Photoshop.

Who was naughty this year? :twisted:

http://features-temp.cgsociety.org/gallerycrits/270690/270690_1198596208_large.jpg

ValerKa
12-25-2007, 04:00 PM
RazorJack you a crasy maniac :D :wip:

frakke
12-25-2007, 05:05 PM
http://features-temp.cgsociety.org/gallerycrits/6804/6804_1198602460_large.jpg

Hi. It's nice to do a little 3D in between all the dinners :bounce:

I used 3ds max9 and V-Ray for the render with GI (lightcache and irradiance map). Rendertime about 24min. Postwork done in photoshop.

I used a direct spot for the moonlight, a sphere light for the fireplace and a fill light besides the fireplace to give the room a warm glow. I also put in a spot light to light up the tree a little. The light bulbs are just a V-Ray light material.
The fire and the background was added in photoshop, as well was the overall glow. Otherwise it's pretty much the raw render with a few minor tweaks with Color Curves.

Frances
12-25-2007, 07:58 PM
Here is a wip of my try at it. I have a couple of details to add. This is done with fryrender vBeta 1.9. The original 3200x2400 version rendered for 7.5 hours, then I downsampled it to 800x600. Of course, I'm not hoping to win in the speed category. :) My system is a dual dual-core xeon 2ghz with 4 GB ram, running xp64. Tips? I used a roughness map to make the mirror look less mirror-ly. I used a plane with an hdr emitter for backfill. All the lights are on separate blending layers so that I can tweak them interactively. I also tweaked the floor geometry with the Max Push modifier and by scaling the elements in x and y. Well, anyway, here it is:

http://www.surrealstructures.com/Fryrender/CGTalk_Christmas_scene_WIP.jpg

MrWilde
12-25-2007, 09:22 PM
Mr. Wilde: i think you did an excelent job.. only you could have added a few textures.. the walls.. a few different gift wrappings.. maybe a displacement for the fireplace bricks... over all great atmosphere.. i like the snow outside the window too.. fire looks great..
Thanks!

Here's an update:

http://img412.imageshack.us/img412/8452/merryxmas03na2.jpg

And a widescreen version of it:

http://img530.imageshack.us/img530/8747/merryxmas03widens6.jpg

ramonesFAN
12-25-2007, 09:30 PM
Something evolved:
http://xs122.xs.to/xs122/07522/test_2.jpg

PS: Nice works mates!

thorsten hartmann
12-25-2007, 09:58 PM
hi Guys,

Ah... i have see this challenge yesterday (to late?). I like the stil from Mr. Wilde. Very nice atmosphere. Here my one pass rendering.

Software: 3dsmax2008, mentalray, (no photoshop or what ever)

Lighting: 1 x mr_sun, 1 x mr_sphysical_light, 3 x mia_light_portal,

Shading: all mia_material Shader

http://www.infinity-vision.de/service/christmas_lighting_challenge.JPG

mfg
hot chip

TranscendentalLucidity
12-26-2007, 12:49 PM
I started this the other day using vray in max 9, but it continued to crash so i had to switch to MR in max 9. It doesn't look as good but its not bad. Only textured the floor so far and only worked on two of the tree lights.

C&C welcome i've not done any 3d work for quite awhile. How did you get the flicker on the flames above the hearth Razor? I've still no idea how to do that.

http://www.dominictook.com/Comps/lc13x2V0.1.jpg

RazorJack
12-26-2007, 01:10 PM
RazorJack you a crasy maniac :D :wip:
yes, i am :buttrock: :)


How did you get the flicker on the flames above the hearth Razor? I've still no idea how to do that.

well .. i think the key to that is the reflection :)
My marble has fresnel falloff in the reflection slot with some glossyness and the bricks alos have some reflections ... in fact everything in my scene have glossy reflections :) The light in the fireplace is a big (this is important for the shadows) spherical vray light with kinda orange color ... i think yours is too yellowish

Halford
12-26-2007, 02:49 PM
Nice challenge! I'm in, but haven't got much time....but still, I really enjoy playing with lights.

Here is a first approach, spent few minutes today playing arround...still have to do some textures...and well...the light too, this is just a rough idea as I still haven't decided if I'll go for a night scene or an early morning....



http://www.littlboxes.com/temp/christmas.jpg

Still lot of work to do, I know.

done in 3ds max 9
Mental ray renderer with draft FG.
An omni in the chimmy
Self illu material on the bulbs
a Moon light from outside (Spot)
Render time 2min on a dual core Dell 1,8 ghz

Hal.

Nixon
12-26-2007, 04:47 PM
It's a great scene, got me started :)
Ok, there my first try... It's about 4-5 hours of work so far, not too many materials, mostly lights setup.
I want to put candles and maybe curtains to diffuse the backlight a bit, as well as to achieve better depth. The tree will change a lot, needs much more colors and lights, but that will happen tomorrow. As well as materials on the presents and elsewhere.

Hardware - Intel E6600, 2 GB of RAM ; Software - 3ds max 9 64 bit + vray 1.5 SP1 + CC in Photoshop

http://www.nixonanim.com/contests/CG_talk_lighting_13/start_lighting_01.png

And the Vray setup:

http://www.nixonanim.com/contests/CG_talk_lighting_13/vray_initial_setup.png

jojo1975
12-26-2007, 04:51 PM
@ Frances Really great work ! I love your attention for details and fryrender seems to do a great job (sooner or later I will have to try it)
@ Nixon Avodi so much reflectivity on the glasses they seems mirror ;)

So totally new scene for me I was unsatisfied with results obtained and I've redone everything with Mental ray and MIA materials (so it was good for learning)
one area light (phohometric
one light (omni 100 in the fireplace)
one mia_portal and MR sky+skylight
I'm satisfied with lightbulb material (added effect glare)
Textured also the wall (evermotion texture applied to mia) and the floor (Cgtextures modified)
no post porcessing
C&C very wellcome
and now a bit of pause ;)
http://www.webalice.it/giorgio.luciano/CGTALK/XmasGlareB.jpghttp://www.webalice.it/giorgio.luciano/CGTALK/XmasGlareB2.jpg

Siahpoosh
12-26-2007, 05:26 PM
hi guys
its my render :

http://www.photoleech.com/thumbs/1198690832_ZutpoMtpFNjZOJ0.jpg (http://www.photoleech.com/images/1198690832_ZutpoMtpFNjZOJ0.jpg)

more information :
http://forums.cgsociety.org/showthread.php?f=132&t=576806

tuffmutt1
12-26-2007, 06:00 PM
my second version of this...more moonlighty. max and vray..http://img245.imageshack.us/img245/6179/xmas13kadkademoonlitje3.jpg (http://imageshack.us/)

and a toppish version...no post on either one of these yet.
http://img241.imageshack.us/img241/2374/xmas13kadkademoonlittopvk5.jpg (http://imageshack.us)

neoartec
12-26-2007, 06:33 PM
Jeremy great challenge!

Hello everyone,

This is my first contribution in CGtalk challenges ..
Here's what I got for my research of the global atmosphere.
http://img236.imageshack.us/img236/1487/wip03xe3.jpg (http://imageshack.us/)

No GI FG and for the moment.


Software Maya8.5 and rendering draft with M | | R

You can follow the WIP in french: WIP Challenge Lighting (http://gpepper.free.fr/viewtopic.php?id=54/)

MrWilde
12-26-2007, 06:50 PM
A new perspective, and now with DoF. Light setup is the same as in the other render.

Close Up #1
http://img166.imageshack.us/img166/6744/merryxmas04dopjn6.jpg

First rendered the image without the volumetric effect, and then another render with just the volumetric light (and its reflection). Composited together + lensflares added in Photoshop.

http://img181.imageshack.us/img181/1615/merryxmas04dofhowtosu7.jpg

tuffmutt1
12-26-2007, 07:03 PM
Hey Wilde ...WOW!!!Super nice...really love this one...its a keeper...
what renderer are you using?

Narukami
12-26-2007, 07:49 PM
These Christmas trees are beutiful
keep up the good work!!!

tuffmutt1
12-26-2007, 09:29 PM
neoartec...nice start...i tried this fake white tree myself in the beginning...
http://img258.imageshack.us/img258/2187/xmassnowukpw0.jpg

i think that would be an awesome addition to this over all collection of fine lookin' christmas trees.. vbmenu_register("postmenu_4853014", true);

TranscendentalLucidity
12-26-2007, 11:38 PM
A little update, thanks razor. I'd try that if my logs weren't meant to be burnt out hehe.

I'm having trouble with the christmas lights, i put mr omni area lights inside each bulb and excluded the objects, but the lights are casting any rays. I fixed this by putting them around the objects instead. But the light looks fake. Does anyone have any ideas?

http://www.dominictook.com/Comps/lc13x2v1.0.jpg

MrWilde
12-27-2007, 12:21 AM
Hey Wilde ...WOW!!!Super nice...really love this one...its a keeper...
what renderer are you using?

Thanks so much! I rendered this in LightWave with the standard LW renderer.



And here's the last one (this is NOT supposed to be an update from the last render). From another angle so you can see the fire place in the reflection. ;)

Close Up #2
http://img181.imageshack.us/img181/1889/merryxmas05dofpe0.jpg


Same procedure as in the previous image:

http://img144.imageshack.us/img144/6427/merryxmas05dofhowtoal2.jpg

gattaca13
12-27-2007, 01:41 AM
Mr. Wilde,
I absolutely adore your render. It is very beautiful. But...... I don't like the latest one. You had it perfect before....that HUGE bulb that you added in the reflection, is just very distracting. I don't think you want a REALLY bright bulb being the main focus of your image.
I highly recommend a different approach to it.
You were on the right track. Just take a step back and re-evaluate it.
It really is beautiful. I don't mean to be so harsh about it. I just loved it so much before and saw this new render and was like, 'noooooo!' :p

keep it up man. :)

DigitalOmega
12-27-2007, 04:28 AM
Hello!
Well, here is my entry:
http://www.digitalphilia.com/portfoliogallery/finalxmaschallenge.jpg

dedicated to all santa believers out there hehe
max9 rendered with vray, physical camera, linear workflow- it is Irrmap and light cache (i know, the samples look weird on the left wall.. But I tried with a very high brute force GI and the results were very similar too.. got to check on that hehe) I made the setup in about 2 hrs with some archshaders from evermotion and the render took around 2 hours.. and some post in fusion5.
I will try to make another version to get some more sense to the bokeh effect because it is a little too exagerated on this image hehe..

PhantomDesign
12-27-2007, 05:54 AM
A small tip for everyone on their xmas lights. Your RGB values shouldn't be compeltly saturated. For example, if I was to have a green christmas light, it would be [10r,255g,30b]. What will happen is you'll get a small hot white core, followed by a thin blueish-greenring that falls off quickly to green (due to clamping). If you add a slight glow or lense-flare based on values over 255 (or 1.00 for HDR) that will complete the effect nicely.

[0,255,0] produces . . . (when clamped)
[0,255,0] . . . [0,255,0] . . . [0,255,0] . . . [0,128,0] . . . [0,25,0]

[10,255,30] produces . . . (when clamped)
[200,255,255] . . . [100,255,255] . . . [15,255,45] . . . [5,128,15] . . . [1,25,3]

tuffmutt1
12-27-2007, 09:33 AM
Mr.Wilde. I love this one more..:) mostly because its more colorful than before.really nice.

Run3D
12-27-2007, 10:03 AM
Mr. Wilde (http://forums.cgsociety.org/member.php?u=155156), great work :thumbsup: vbmenu_register("postmenu_4853376", true);

ToddD
12-27-2007, 02:59 PM
Here's my first render, a couple of hours into setting it up. I wanted to get away from just rendering a photo-realistic shot, and wanted to play with the mood of the scene a bit. Still a WIP, Samples are low :)

http://img.photobucket.com/albums/v99/tbonz/small_chall-01-1.jpg


Todd

tuffmutt1
12-27-2007, 05:50 PM
here are a few references i ve been working with....thought i d share it with you all .

http://img87.imageshack.us/img87/1474/tree2aj6.jpg (http://imageshack.us)

http://img84.imageshack.us/img84/1144/treeup4.jpg (http://imageshack.us)

http://img144.imageshack.us/img144/8206/christmas04uo6.jpg (http://imageshack.us)

tuffmutt1
12-27-2007, 05:57 PM
A little update, thanks razor. I'd try that if my logs weren't meant to be burnt out hehe.

I'm having trouble with the christmas lights, i put mr omni area lights inside each bulb and excluded the objects, but the lights are casting any rays. I fixed this by putting them around the objects instead. But the light looks fake. Does anyone have any ideas?



do you mean rays as volumetric rays? or GI rays?

CHRiTTeR
12-27-2007, 07:39 PM
Mr Wilde thats awesome work dude

Frances
12-27-2007, 11:09 PM
Thanks jojo1975 for the comments. :)

Here is an update on my attempt with fryrender:

http://www.surrealstructures.com/Fryrender/Cam_02_final.jpg

http://www.surrealstructures.com/Fryrender/Cam_01_final.jpg

L33tace
12-27-2007, 11:43 PM
another update. worked on uvmapping some objects, the fire flagstones I had to delete, they didn't import well into Carrara and also smoothing some objects. i've noticed more uvmapping that needs doing hence why I ain't posting a brighter image yet. :blush:
anyway, this work was mainly on the fire. i have a blub light facing the fire and i added a fire image as a gel map and also added some glow to it.
setup:
http://homepage.eircom.net/%7Ecasstify/sshot2.jpg
render:
http://homepage.eircom.net/%7Ecasstify/xmas2a.jpg
i also did an ambient render and blended it with the above image in photoshop elements2:
http://homepage.eircom.net/%7Ecasstify/xmas2.jpg

gattaca13
12-28-2007, 12:53 AM
Frances,
Your render is very beautiful! Looks very realistic. One thing I would fix/change though. I think you should definitely add an exterior background to your windows. Having them whited out like that makes it look very flat. Having a subtle exterior will make it look real nice. :)

Awesome stuff! :)

MrRay
12-28-2007, 01:43 AM
great renders and information here and on every rendering engine.its nice to have thread like this. here is my take on the scene. its not much but im hoping to get better at it. good luck to all.cheers.

http://img179.imageshack.us/img179/4956/christmas04ak1.th.jpg (http://img179.imageshack.us/my.php?image=christmas04ak1.jpg)

Breuer
12-28-2007, 02:35 AM
Lots of nice images here.
Never entered a cg-challenge before, but had some time now that its christmas.
For this image I've rendered several passes ; main beauty pass, christmas light pass, several seperate reflection passes, atmosphere pass, volume light pass, shadow pass and christmas star pass. All composited in photoshop and fusion. Only added geometry is the painting on the left wall.
Rendered in 3dsmax using mental ray and scanline for some passes.
Hope you like.

Thanks to Jeremy Birn for great modelling and scene.

http://www.hjelpihjemmet.no/erik/final_christmas.jpg

Breuer

Frances
12-28-2007, 05:31 AM
Thanks for the feedback gattaca13. :) I'm working on the background now. I thought I would be clever and grab a snow scene photo, but it got all washed out with my exposure settings. So I'm trying a different photo.

I'm also still working on the fireplace. The fire is a real scene-breaker for me. :sad:

BTW, great fire Breuer. :)

MinaRagaie
12-28-2007, 09:14 AM
Thanks for the feedback gattaca13. :) I'm working on the background now. I thought I would be clever and grab a snow scene photo, but it got all washed out with my exposure settings. So I'm trying a different photo.


Speaking of exposure settings... IMHO the washed out view of the windows is common in most photos. you can't have exposure settings on a real cam that let's you see the details inside the room without having the exterior overexposed... and vice versa.
adjusting the image outside till it shows some "ghosts" of an exterior scene is not a bad idea but not necessary. making an exterior scene "Read well" through the window is not realistic but might be a good artisitc choice... up to you :)

-Mina

thorsten hartmann
12-28-2007, 10:22 AM
hi,

here is my update.

Software: 3dsmax2008, mentalray, (no photoshop or what ever)

Lighting: 1 x mr_sun, 1 x mr_sphysical_light, 3 x mia_light_portal,

Shading: all mia_material Shader and partivolumen for atmosphere

http://www.infinity-vision.de/service/christmas_lighting_challenge.JPG

mfg
hot chip

Frances
12-28-2007, 02:23 PM
Speaking of exposure settings... IMHO the washed out view of the windows is common in most photos. you can't have exposure settings on a real cam that let's you see the details inside the room without having the exterior overexposed... and vice versa.
adjusting the image outside till it shows some "ghosts" of an exterior scene is not a bad idea but not necessary. making an exterior scene "Read well" through the window is not realistic but might be a good artisitc choice... up to you :)

-Mina

Mina, your ideas are similar to mine on this issue. My goal was to show the hint of something outside, the result of having the outside environment "blown out" due to the exposure settings necessary for an indoor shot.

MinaRagaie
12-28-2007, 02:37 PM
@Frances
So.. you knew that already :)
always Nice to meet another architect BTW :)

-Mina

Frances
12-28-2007, 03:10 PM
Mina, I visualize for architects and interior designers. I was a technician for architects for many years. :)

I am working on improving the fire:

http://www.surrealstructures.com/Fryrender/red_fire.jpg

loramel
12-28-2007, 04:39 PM
Thank you Jeremy for your feedback.

I revisited my lighting again and think I have now found a setup with which I am quite happy. Prviously I had 2 spots as the light coming from the fireplace but that gave me no convincing results. I am now using an arealight with raytraced shadows. This lengthens the rendertime but gives better results.
I also faked some ao for the door area with 2 spots and buffer shadows.
I did also some major update on the shaders and textures. I tried to give the room a somewhat worn look.

Here is my next turn

http://loramel.gmxhome.de/xmas/xmas_06.jpg

jojo1975
12-28-2007, 07:05 PM
@ France
I think the fireplace is gettng better and better I will like to see the "final render" (I think that fryrender is like maxwell you live it as much as needed as I've understood well)
Soon I will post my "semifinal" with also some explaination ;)

neoartec
12-28-2007, 07:12 PM
Next:

http://img149.imageshack.us/img149/3443/wip04ug5.jpg (http://imageshack.us/)
1:45 time record in production mode with a FG.


Me still have some element to model after I go to the improvement of lighting and rendering.

PS: If you have any tricks to create garland Christmas, it would be welcome. I made a few attempts but not conclusive. Not being a fan of Maya (ca 2 months doing that I am above). Thank you.

Sorry for this imperfect English.

Frances
12-28-2007, 07:56 PM
I have comped together most of the lighting variations I can do with fryrender layer blending. Here is a thumbnail:

http://www.surrealstructures.com/Fryrender/CGTAlk_blend_thumb.jpg

I've narrowed my choices down to 2, one that I thought of after I made the proof sheet. :shrug:
http://www.surrealstructures.com/Fryrender/Candidate1.jpg

and this one with all lights except for the fill: [ETA: this image has been updated with fill light on, but set to 30% intensity]
http://www.surrealstructures.com/Fryrender/Candidate2.jpg

Sorry for so many images. :blush: And thanks again jojo1975 for your comments. :)

neoartec
12-28-2007, 08:07 PM
Hello Frances

It's good work, I prefer personnelemnt image No. 2, I find that shade is better. But I think it lacks is a small detail of embers underneath the buche emflammé.

Frances
12-28-2007, 08:33 PM
Thanks neoartec. No. 2 is my favorite too. I used some displacement to try to get embers under the grate, but it wasn't very successful.

Pooyag
12-28-2007, 09:57 PM
Wow,
i am really amazed by the number of Great works on this challenge.
anyway, i thought i should give it a try.
Let me know what u think.
http://i35.photobucket.com/albums/d173/Pooya66/02.png
Happy Holidays:thumbsup:

suedix
12-29-2007, 01:38 AM
Here's one from Cinema (core renderer) all lights are omnis. Still a little work to do - the "sparkles" on the floor are unintentional, I'll probably fix them, and some of the textures need some work. I'm still toying with the idea of a wreath on the fireplace. One bow needs to be adjusted.

Lot's of great images here and I'm learning a lot going through the exercise.

http://www.pollockmtngfx.com/images/render_122807_2.jpg

T-R
12-29-2007, 04:28 AM
Thank you all for the suggestions:)
Image updated:


http://img246.imageshack.us/img246/5083/xmaswide0000rk4yc6.jpg
(http://img169.imageshack.us/img169/3410/xmas254yi9.jpg)

jojo1975
12-29-2007, 12:39 PM
@ TR I will add just a bit of GI or some fill light even if it's night scene it looks a bit too dark

thundering1
12-29-2007, 03:26 PM
These are all fantastic!
Well, I guess I've been lurking in the forums long enough - time to ---- or get off the pot.

C4D, AR module using AO - gonna try using GI as well, but that will be an overnight render for me. A truckload of lights - 1 main outside that's a little amber with deep blue shadows. Inside lights range from warm to fairly deep blue for ambience, and glows all troughout the tree as well as a light to simulate some form of lamp that would be just off camera.

CryingHorn
12-29-2007, 06:25 PM
Merry christmas evrybody! Decided to make my own one too. I wanted to give christmas night or even an early christmas morning atmosphere.

Used 3dsmax mental ray. Volumetrics rendered with scanline, background and glow added as a final touch. I'll render bigger one later, this one is kind of wip so far.
http://193.219.173.250/~lenciugas/various/smallwip.jpg

phOny
12-29-2007, 06:46 PM
Some very good work on here, CryingHorn: I love your render, The coldness from the window and the heat from the fire... wow. Great work all.

jojo1975
12-29-2007, 08:47 PM
@ CryingHorn (http://forums.cgsociety.org/member.php?u=155088) Really good work ! even if the volumetric seems a bit too overdone (but that is only my opinion overall it's a great image also very well balanced and toned)
I went for the photorealistic part there's what I've done

http://www.webalice.it/giorgio.luciano/CGTALK/0XmasPlacement.jpghttp://www.webalice.it/giorgio.luciano/CGTALK/1XmasArea01.jpghttp://www.webalice.it/giorgio.luciano/CGTALK/2XmasDaylight.jpghttp://www.webalice.it/giorgio.luciano/CGTALK/3XmasOmni1.jpghttp://www.webalice.it/giorgio.luciano/CGTALK/4XmasGlareB2.jpg
http://www.webalice.it/giorgio.luciano/CGTALK/5SemiFinalXmas2.jpg
http://www.webalice.it/giorgio.luciano/CGTALK/5SemiFinalXmas2

http://www.webalice.it/giorgio.luciano/CGTALK/6SemiFinalXmas3.jpg

http://www.webalice.it/giorgio.luciano/CGTALK/7SemiFinalXmas3DOF.jpg

So you can see I've used only 3 lights + sunlight system (mR) all MIA materials all textures taken fro mthe web. I like the appereance of the glare (probably too overdone but ok) Waiting for feedback ( I think this is semifinal images probably before deadline I will render one more and if everything will be ok I will do a video of how I placed the lights)
Thanks to all and KEEP ALL UP THE GOOD WORK

Pooyag
12-29-2007, 08:55 PM
@ jojo1975 a little over exposed i would say. and also the ribbon facing the camera looks flat. other than that, Great work.

and here's an update to my humble entry :D


http://i35.photobucket.com/albums/d173/Pooya66/03.png

Keep it up everyone!

thundering1
12-29-2007, 09:26 PM
Actually, I like it to be blown out a bit from time to time. With this setup it can lend itself well. Part of what usually makes it look "3d" to me is that every little thing is at least decently lighted - real photography is often messy when not using supplemental lighting. Highlights blow out, shadows crush...

Is anyone else having trouble with the mapping of the fireplace? For some reason I have to scale my texture bizzarly down - it's tiling like crazy!

jojo1975
12-29-2007, 09:29 PM
what software are you using ? With max an add uvmap (Box) was sufficient (and then used 3 for values for tiling)

thundering1
12-29-2007, 10:13 PM
Cinema 4D - and I'm not that experienced with it to be honest. When you apply a basic texture, you just have the choices of UVW, Spherical, Cubic, Cylindrical, Spatial, etc.

Each of them is tiling the crap out of the fireplace - I don't normally have this problem with model - and even with any of the other models in this scene - just this fireplace...

I've thought about going through BodyPaint, but again, not too experienced and right now t's a bit daunting.

eafreak
12-30-2007, 02:59 PM
Hey all, one again, great job guys. Looking at the posts are inspiring to be honest.
I used 3ds max 9 with Mental ray as my renderer. My pc is pretty slow, so the render to about 2 hours to complete, perhaps bit more.

I learned about Final Gather yesterday so this is my first time trying to use it in a scene (hope it is not too obvious hehe). Anyhow, to speed up the render I used the multiplier instead of big numbers in other settings.
The bounces helps with making the presents to stand out more.

As for the tree lights, I have no idea how to make them "glow", since glow (lens effect) is not supported in Mental ray. So, I cheated perhaps; by adding omni lights at the end of every globe and setting the globes to have rays. By doing so, the lights seems to glow...

Other effects I used was volumetric lights for the fire and the moon light from outside. I did not want to over do it though. As for materials, I used standard 3ds max library materials and changed settings to my taste for the scene


http://img412.imageshack.us/img412/6788/fg1yh0.jpg (http://img412.imageshack.us/my.php?image=fg1yh0.jpg)

Frances
12-30-2007, 04:34 PM
@jojo1975 - Coming along nicely. Maybe some fresnel falloff for your glossy reflections - they look a little metallic. As is, they read better from the overhead shot than from below. :)

@Eugene, I haven't used mr for a long time, but there used to be a glare shader in the lume library. That might help. Looking good so far.

@Lewis, does C4D have a tiling parameter for the various mapping modes? If so, play with that.

mirmel
12-30-2007, 05:12 PM
Hello everybody.. this is my first post, and my first challenge!!
Great works, really!!
:)

mirmel
12-30-2007, 05:29 PM
second post .. waiting for validation
sorry for these unuseful messages:)

T-R
12-30-2007, 06:15 PM
Here is a last one. Maya/mental ray.

http://img254.imageshack.us/img254/6320/cuxmastakecopygh5.jpg

Pooyag
12-30-2007, 06:22 PM
Great work TR, great work!! :thumbsup:

MrWilde
12-30-2007, 09:21 PM
Wow, that one's truly amazing! Great work, T-R!

jeremybirn
12-30-2007, 09:21 PM
T-R - Wow! That is freakin awsome! You can see some faceting on the nearby pine needles, though, they might need more subdivision for that tight a close-up. I really like your wider shot (post 217 on the previous page) too, although if you do any post work to that I think the brightest part of the fireplace could go less saturated.

eafreak - Nice work. You can add glow as a post effect. I'd do it by rendering the bulbs in a separate layer and screening a blurred copy of that layer over the image, but there are many other approaches to making bright parts of your image glow. For the fire light, see if you can get softer shadows, and make the point sources less obvious. The wood on the floor and panels could use some specularity or reflections. Some of the gifts seem to be almost like light sources, with red that's brighter than their surroundings and even brightens the floor underneath them.

thundering1 - Your fireplace doesn't look bad, maybe fewer repeats of the texture would look better. The circle of light above the tree doesn't look believable to me, see if you can tone that down and soften the light and its shadows a lot. I'm not sure where the illumination on the right is coming from, maybe objects on the dresser could be brighter on the left side if the light is coming from the windows or the fire?

Pooyag - Nice work. I'd like to see more illumination from the tree on the walls around it.

jojo1975 - Nice! You've got a great variety of images in that last post. For the first one, there's something strangely amplified about some of the indirect light, making it brighter than would be motivated by the direct illumination. Look in the lower center of the image at the impression that the gifts are glowing onto the floor for example. Second one the blown-out glare is an OK styliztic choice. The gifts that are facing us should look more back-lit and darker on the front to make that realistic, though. I hope you can do more with the star to make it look reflective or something. Third one same issues as the 2nd. Also, the brick texture looks fine on the chimney but doesn't fit well with the fireplace, and it would be nice to get softer, warmer light from the fire. Last one is a nice image, maybe the pine needles need more subdivision where the camera is that close.

CryingHorn - That's great! You've got a really magical feeling with the blue light wrapping around the tree, and the white needles in the moonlight. Your textures and background add a lot to the scene. I think the light from the fire and candles could be more contained. Maybe the fire light could fade off with height, so there was a gradient darkening it towards the top of the fireplace? For the candle light, it would be good if only the immediate area near the flames got bright, instead of the whole width of the chimney. Also, the flames themselves could be brighter, to motivate such bright illumination on the stone. See if you can get some rim light or kick light on the right side of the stockings to bring them out better in the moon light. On the right side of the frame, the light on the back wall could be a gradient fading darker towards the right, and the light on the floor could get darker too, especially on the boards closest to the dresser.

suedix - Nice job! I'd like to see more of the scene exposed so I could see something of the walls, the bag or dog in front of the fire, etc. Some parts of it like some of the bows are starting to look really good.

Frances - That looks great! Your texturing is first-rate, even with nice brick work on the fireplace, and a fuzzy looking trim on the stockings. The lighting looks natural and believable overall. I think the fire light could have smooth, soft shadows, instead of stopping at that diagonal line. The front log could cast more of a shadow onto the right side of the stand, too, and less of the fire light could be aimed downwards to the bottom of the fireplace, maybe just some burning embers belong there. In a room filled with natural light, the fire light could look dimmer, too, so it doesn't overexpose the edge of the hearth.

neoartec - Nice job. Some of the furnature appears to glow a bit too much, I don't see where that light would come from on the shelves?

-jeremy

beverins
12-30-2007, 09:26 PM
Hi everyone, Here's my attempt with Lightwave, using one area light outside and luxigon point lights for the lightbulbs.

Also a point light for the fireplace.

T-R
12-31-2007, 12:36 AM
Wow, thank you guys for the comments:thumbsup:
You can see some faceting on the nearby pine needles..
..brightest part of the fireplace could go less saturated....
Thank you for the suggestions Jeremy. I updated the original posts with the changes.

Frances
12-31-2007, 02:55 AM
Thank you so much for the feed back about the fire lighting, and for your other comments Jeremy. I have some ideas about how to implement your suggestions. :)

Jacobo
12-31-2007, 06:00 AM
Hi everyone;

Thanx Jeremy for this opportunity. I was checking out the forum and thought I should hook up and join the challenge.

I downloaded the obj files and started lighting the scene in Lightwave. I came up with a simple little theme for my work before I embarked upon lighting the scene which is "Xmas morning" :) Every kid looks forward to that certain day of the year to wake up and find nicely wrapped presents under the tree, and in my work I wanted to convey that feeling from the pov of the kid(s) of this house...

To convey that feeling of joy and serenity, I decided that it would be better to use warm colors and earth tones throughout primarily and that I somehow had to accentuate the presents.

I started off by adding a strong key light that shines brightly at a low angle, as it is the wee hours of the morning. I went on from there putting in bounce lights that radiate throughout the interior of the room.

There's no radiosity or GI enabled in the scene, nor I made use of any third party pixel filter plugins except fprime, without which I'm certain I wouldn't have been able to convey what I wanted to do quickly and effectively.

It's always great to aim for drama in your scene other than solely going for realism, and one can maintain better control of the scenic story telling with conventional lighting.

And btw, this scene with over 1.5 mil polys renders in less than 1.5 hours on my silly desktop that has a dual core 2.44 processor with 3 GB of Ram as opposed to what it would if montecarlo or FG was enabled, considering the heavy additional ray tracing that is involved...

The renders I'm posting here are not final cuz I'm still in the process of refining the scene. The crisp shadows of the stockings cast on the front of the fireplace and the rather irritating shadows of the tree on the ceiling will be eventually replaced by highly diffused shadow map shadows that give a better feeling of occlusion shadows cast by intense bounced radiation of light, simply because fprime is a 2.5D raytracer and does not support shadow maps (bugger...) I'm going to render the final output with LW's default which will hopefully look a whole lot better with volumetric light seeping in and after certain elements are composed and the imaged are color corrected...

But anyhow, hope you guys will like my work. I'll post screen shots of light placements and more concise explanation of the material setup involved with the lighting of the scene...

Cheers All;

AJ

Image no.1:
http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_01.jpg

Image no.1:
http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_02.jpg

mirmel
12-31-2007, 09:51 AM
Hi all!!
Here's my wip... :blush: :)!
I used only maya software and ..many many lights (linked lights).
No Ao for the moment
I'd like this work more similar to an illustration, cartoon look.
I had to add more detail especially on the walls and fireplace. I'll post other upload soon.
...That's all!

Thanks Jeremy for this opportunity!and for this great model!
looking for receiving your feedbacks... bye!!

floze
12-31-2007, 02:02 PM
Wow, there's some extremely tasty renderings going on here!
I totally dig your DOF image, T-R, any chance of getting together a breakdown on this, for us mr users? :D

And a Happy New Year everyone!

thundering1
12-31-2007, 02:07 PM
Thanks a LOT for your advice Jeremy - I'm having trouble translatring lighting in the real world to using lights in 3D. They have the same "idea" but don't work the same way in practice.

Got rid of the light above the objects on the right, got rid of the lights throughout the tree and surrounding the tree (which I was trying to use to give the tree rim lighting) and softened the light right below the top ornament.

This time used GI, and what a difference all over! Gonna try a different, more interesting angle next time, maybe put fire in the fireplace and make it directly at night instead of dusk.. We'll see.

jplante
12-31-2007, 03:37 PM
i dont know there was a lightning challenge here with Jeremy Birn...
that's my bedside book :)
it's great to see what others artists do...

i have downloaded the max file...
i would like to participate if i have the time...

greetings!

J. Plante.

mirmel
12-31-2007, 04:21 PM
Hi!:)
Here's my upload with an occlusion pass.

what do you think? Any suggestions?
Thanks!

See you next year!! :applause:
.. Happy New Year everyone!
m

CGmm
12-31-2007, 04:53 PM
This is my update.
http://www.seijimm.com/xmasTreeInFocus.jpg

Maya MentalRay
I added AO effects from MIA_Material settings.
This time I rendered Tree-only pass and Boxes-only pass.
Then I spend more time on Photoshop to put togeter with Lens-blur filter
and added post-effects for the lights.

Any comments are welcome.
Happy New Year!

Biofreak
12-31-2007, 05:24 PM
http://i129.photobucket.com/albums/p208/Biofreak13/test4.jpg
here is mine, very clumsy and rushed :D

Pooyag
12-31-2007, 06:27 PM
Hi again everyone,
another update... Thanks a lot Jeremy! it's an honor to have you here :)
http://i35.photobucket.com/albums/d173/Pooya66/04.png
i have no idea why, but those lights i had in my fireplace are not rendered or something.

jojo1975
12-31-2007, 07:29 PM
@ Biofreak (http://forums.cgsociety.org/member.php?u=211295) a bit underexposed but good start ;)
@thundering1 (http://forums.cgsociety.org/member.php?u=147676) I really like a lot (which renderer are you using ?) but try to unwrap the package ;) the texture look a bit messy

Biofreak
12-31-2007, 07:49 PM
@ Biofreak (http://forums.cgsociety.org/member.php?u=211295) a bit underexposed but good start ;)
@thundering1 (http://forums.cgsociety.org/member.php?u=147676) I really like a lot (which renderer are you using ?) but try to unwrap the package ;) the texture look a bit messy
Thanks, gonna re-render :)
3 hours gg.

Engys
12-31-2007, 08:22 PM
Hi,
this is my first cgtalk entry . The image is rendered with Max 8 default scanline. Camera Dof and Post Glowing. Thanks for this nice challenge!

http://datlantis.org/xdlight.jpg

Jacobo
12-31-2007, 08:32 PM
Here's step by step follow thru of my setup;

Step 01: At first, the scene was devoid of any lighting of any kind (turned off the default light)

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st01.jpg

Step 02: Then I upped the ambiance just a tad, like around %10, to give a slight wash of unsaturated blue...

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st02.jpg

Step 03: At this stage, I added blue ambient point lights that mimic the light emanating from the bulbs.

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st03.jpg

Step 04: Then I added a spotlight to act as the key sunlight with ray traced shadows...

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st04.jpg

Step 05: This is the ambient wash of light radiating from the exterior, acting as a quasi-light portal...

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st05.jpg

Step 06: The second environment portal.

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st06.jpg

Step 07: The first strong bounce from the highly exposed areas...

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st07.jpg

Step 08: The secondary bounce radiating from the highly illuminated area on the wood floor.

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st08.jpg

Step 09: The weak warm light from the dying fire in the fire place.

http://www.ajlanaltug.com/files/AJ_XMAS_CHLNG_lighting_st09.jpg

continued in the second post...