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lotaH
07-06-2006, 11:11 PM
@danchez - Great scene. The lights and the colors are very interesting. Congratulations.

@karimD - very good your camera... good work.

@Maven - very good your illumination, but does it still lack density in the water, no?

@SanderWit - I agree with you. :thumbsup:

[]'s
Diego

MT-Cup
07-07-2006, 12:05 AM
Gah, I so dropped the ball on this. I hope to show some improvements this weekend. Thanks for the comments and suggestions.

JCAddy
07-07-2006, 12:33 AM
here is my attempt.. all textures procedural, except sky
tried to get good mood and all the effect within lightwave
light beams done with help object "water face" because lightwave understands cammera as just one point in space (so you are under water, or over, never between) so i needed help object to get wet/dry type of look..
"water face" helped also to get light beams without volumetric lights (just tinted and stretched procedural texture on luminosity channel
i used also refraction blurring (1%) to get slightly blurred underwater part, and also surface thickness helped to get underwater fog (all also on "water face" object)
..
scene contains 3 lights
one main light on top right for sun .. shadows on
one light from left to get "sky" light .. shadows of
and one light directly from bottom to get reflected light on bottom of the boat and pier
the bottom light projects the sky texture to get variations in lighting
..
image is also slightly photoshoped to get right exposure and monochromatic image
also light haze is done in photoshop (duplicated image, blurred, slight levels to get rid of lightening dark arease, and set to screen)
..
and finaly, here is the image:)
http://roof44.zizkov.net/3d/lighting_underwater.gif
i am quite satisfied with result..
working time around 3 hours

how crap, very nice!

Tad
07-07-2006, 01:53 AM
hello again :-)

i made a new image, this time "over and under" the sea.
MrBobble´s great image inspired me to "pimp" my scene a bit.
please let me know what you think !

greetings from germany


edit: it´s still not completed, need some time for texture and detail work, but it´s late
and i need some sleep ;-)

http://img57.imageshack.us/img57/5067/overandunder0ub.th.jpg (http://img57.imageshack.us/my.php?image=overandunder0ub.jpg)


ups, i did something wrong in the first image - it should simulate a divers pov but i added water drops over AND under the water surface ...

http://img72.imageshack.us/img72/5453/oafix9qn.th.jpg (http://img72.imageshack.us/my.php?image=oafix9qn.jpg)


bye

andy

I like this one alot,
the color composition is really nice, very eyecatching.

I'm curious how you did the droplets on the camera lens? (feel free to pm me if you don't want your secrets "out" )

Tad
07-07-2006, 01:54 AM
Dsanches, urs is definetely a contender!
the lighting is so beautiful!

i think the composition needs work still though,
everything is just kinda jumbled in the middle.

Shankar
07-07-2006, 02:58 AM
Hello Friends,

Thanks for your commnets. Here is my latest work in progress.

meanlebh- Thanks for your kind comments. I took your comments and changed according to it.

-Shankar

http://static.flickr.com/48/183787233_9dc5a1da7e_o.jpg

paladin6303
07-07-2006, 03:22 AM
karimD:

I like the surreal feel of this piece.

danchez:

I like the look of this, the shading is awesome, the only part that bothers me is the wide angle view of the waterline, I feel bad to mention this because this is such a beautiful image.

I'm probably babbling so Ill shut up now.

Coriolat:

I like the murky look, and the algae is great!

xoranimation:

first image:
I like the colors, maybe more plants closer to the camera and softer caustics, other than that, it's a painting.

second image:

This is great! Maybe a few more plants beyond the boat side of the dock, the bubbles in the lower right seem overly large, but the bubbles at the waterline are perfect.

Shankar:

The caustics seem a bit sharp relative to the murkynes of the water, but otherwise I can almost hear the underwater sounds that would go with this scene...

time to shut up, time to play,
Al

Zorbi
07-07-2006, 07:48 AM
Here's my version.

http://forums.cgsociety.org/attachment.php?attachmentid=98180&stc=1




Hi-Rez Version:

http://www.3dluvr.com/tobias/wip/Lightingchallenge_Test02.jpg

xoranimation
07-07-2006, 08:52 AM
Tad (member.php?u=698): thank you for the kind words :-)
the water drops are just post, it´s a simple B/W image with "displacement" done in afx.


paladin6303 (http://member.php?u=41172): thank you ! :-)
yes, the 2nd image needs more "good placed" details and some fixes :-)
hopefully i´ll have some time this weekend to work on the image.

the water drops need to be fixed too, i think they should be a bit bigger.

Zorbi: i like you image much, the textures/shaders on the poles are just amazig !


andy

Stefander
07-07-2006, 09:51 AM
Very nice work, Zorbi! It just stunned me... I like the wide view, but the rest (especially the right side) is kind of.. Empty. And the ground texture could use a little more detail, as it looks a little bit like a rug now. I love the fishy, though :scream:

Shankar: Really nice image, but it feels too much like a "render", there are way too much waves, and the floor caustics are rather large (or that could just be me). I'm not sure, but there are a few other things that bother me, but I can't really put my finger on it. Also, don't overdo it on the sunrays that shine through the water... Really nice job on the rest though, even though the fishy could use some texturing love :bounce:

raghuramp
07-07-2006, 09:51 AM
Hi every 1,
Check out my work and give me your valuble comments.jeremy brin I am waiting for your reply.



Thanks in adv.
Raghuhttp://server3.uploadit.org/files/raghuramp-UnderWater.jpg

karimD
07-07-2006, 09:53 AM
Danchez : good job.
Tad : lovely setup and colors. however the optical decay between up and down seams too pronounced. To me, the Danchez work seams more acutate or that.
Shankar : very pleasant atmosphere to look at, but the caustics do not feats to the rest.
may be you should try to get them more blurry on the ground.
Zorbi : good balance... I like this picture and beleive that you should review your "volumic light rays" solution.

regrds and good luck
karim

Velarion
07-07-2006, 10:00 AM
hyst -

For the caustic patterns, it looks like you're projecting a proceedural texture that isn't working too well. Maybe try one of the bitmaps from this site instead:

http://www.dgp.toronto.edu/%7Estam/reality/Research/PeriodicCaustics/pics/small_caustic6.jpg http://www.dgp.toronto.edu/%7Estam/reality/Research/PeriodicCaustics/pics/small_caustic8.jpg

http://www.dgp.toronto.edu/~stam/reality/Research/PeriodicCaustics/index.html (http://www.dgp.toronto.edu/%7Estam/reality/Research/PeriodicCaustics/index.html)

It has several zip files full of animated, tiling .tif sequences that can make good "fake caustics."

-jeremy

I joined Atlantis Matte Painting challenge and those textures will help me a lot too, to create more photorealistic work.Thanks:) :thumbsup:

Gabba
07-07-2006, 10:26 AM
I'm impressed by the works that are coming out! =)
Just a little word to Shankar, very nice picture but watch your strike indicator!!! (I don't know if it's the correct word) there is no fish attached to the lure, why is completely underwater?
This could happen if a series of big waves are coming (like when a boat float near your fishing zone producing big waves, when a wave come to the strike indicator sometimes It may go underwater) but the surface dosen't match to this situation! ;)
Keep it up!
Bye!

Gabba

(sorry for my bad bad and poor english =)

(just a little question... what about the IOR of the water? Salt water have a different IOR respect to the "normal" water? =)

danchez
07-07-2006, 10:48 AM
thanx everyone for the comments!

Shankar
07-07-2006, 11:02 AM
Hello Friends,

Thanks for your Kind commnets, Especially Paladin,Gabba, KarimD, Stefander. I will take your comments and modify it. I welcome your comments more. Have a nice Weekend

Thanks
-Shankar

titanwong31
07-07-2006, 11:10 AM
This is still wip work.i just have done with the basic lighting and mood. I am trying to create a beautiful scenery as if a tourism beach. I am still working on the texturing for the entire scene and will touch up on the lighting. Please kindly give me comment to improve on this.Tq.
http://server3.uploadit.org/files/raghuramp-underwater1.jpg

karimD
07-07-2006, 11:26 AM
well, i think salt adds density to the water, so the salty water IOR should be slightly upper than pure H2O. However the "water surface" downloaded for this thread could be both sea or lake.

I remember once, swiming in the vancouver region... I had noticed that the water wasn't realy sulty, as I couled open my eyes "under water"... so, the saltyness level of water, changes between different regions of the world and I do beleive that getting 0,01% more or less IOR is quite far to be considered as a priority in 3D.

...may be I'm wrong but that's what I think?

karim

akwavox
07-07-2006, 03:03 PM
Thanks to all for comments, great challenge, and some beautifull pics !!
I've try to work on the dirt, and the blur. Lots of postprod work in this one.
http://akwavox.com./fc4d/underwater/underwater4.jpg

I love the texturing on the fish here.
This is a simple map, made by Aurety a french CG artist.
The map is still avaliable on frenchcinema4d.com
If you are interrested, here is the direct link ;)
http://www.frenchcinema4d.com/hub.php?doc=modele&modele=253

JoeB2C
07-07-2006, 03:29 PM
Well, here's my contribution to this wonderful contest :)

I tried to recreate a muddy / low visibility environment. Kinda dark, etc.

Brazil used for rendering, some caustics, photons, etc.
I used PS to touch it up a little afterwards.

http://img181.imageshack.us/img181/4474/underwaterscene014no.png

Dave3D
07-07-2006, 03:30 PM
this should be something nice to use up a bit of spare time, Good luck everyone

Phalanx3D
07-07-2006, 05:04 PM
I can't help but comment on these challenges:

A camera should be chosen and agreed upon, otherwise there's no way to compare lighting treatments. You might as well have an underwater 3D image challenge if lighting isn't all that is being worked on.

my .02

k

lagatta
07-07-2006, 05:15 PM
Hi ,

i know i´m a bit late because the callenge has started some weeks ago, but i just wanted to give it a try. So here is my version of the boardwalk under water. It´s of cause still WIP. but i was hoping for some comments about the perspective....

Thanks
jennifer

Wayner
07-07-2006, 05:59 PM
i like the perspective, it would be nice if you could try to get some light to come between the planks of wood on the dock, give a 'window shade' type of effect from the moon of something.

floze
07-07-2006, 06:12 PM
I can't help but comment on these challenges:

A camera should be chosen and agreed upon, otherwise there's no way to compare lighting treatments. You might as well have an underwater 3D image challenge if lighting isn't all that is being worked on.

my .02

k
I might be only speaking for myself, but I like that 'freestyle' kind of treatment. Of course it would be important to have one fixed perspective in order to clinically judge each piece (albeit there is no actual 'winner'). Though that would be at the cost of fun imho. Wouldnt it be quite boring to see only one and the same point of view in each and every post? I really like it how everyone chose a different center of interest. :thumbsup:

Big thumbsup for everyone here, some really great stuff has been posted. I hope I'll be able to put my attempt up soon..

Jonathan33
07-07-2006, 07:50 PM
Hey, you guys i'm just wondering how some of you wnet about creating the "fog" underwate,r to give it that nice effect? i'm using max 8, and like the fog effect just isn't really working, and i don't know how to go about it, i'm using mental ray.

JoeB2C
07-07-2006, 08:02 PM
For my image (see previous page, last post) I simply made a volume fog and played with its thickness a bit. I guess ye can also use volumetric lighting and such. It's simply in the effects window, renderer independent.

Hey, you guys i'm just wondering how some of you wnet about creating the "fog" underwate,r to give it that nice effect? i'm using max 8, and like the fog effect just isn't really working, and i don't know how to go about it, i'm using mental ray.

mbeazley
07-07-2006, 08:39 PM
For the underwater fog like effect I used a combination of ground fog and normal fast fog in Lightwave. The ground fog gets thicker the lower you get. This approach would not work with a split above water / below water effect though. I think DOF can help a lot with this effect also.

I am guessing that in Lightwave you could also use lots of particles and do it with Hypervoxels.

danchez said he used a helper polygon in his which is an interesting approach, one which worked very well IMO. Great image danchez!

I am still tweaking my third image set to post. I will hopefully have it done tonight or sometime tomorrow. Still playing with some particles. May try to use them for the under water haze effect and get rid of the fog all together. This would allow me to texture the fog and possibly use a volumetric light to get some rays in the shot.

-mark

RobbieBaker
07-07-2006, 09:18 PM
Here is my attempt at the underwater look. Rendered using Carrara with standard lighting and a gel on a spot light for the caustic effect and light rays. Then used Photoshop to do a slight level adjustment.


http://jnr.podzone.net/images/UnderTheBoardwalk4.jpg

karimD
07-08-2006, 12:03 AM
Jonathan, place few simple objects in a scene and a camera. Add fog and check Exponential.
leave the rest of your fog settings by default and go to your camera settings/Environment Ranges. Check on "Show" and change the "Far Range" value few times and render your camera view after eatch value changement. you will notice that the far range value determins where the fog will reach the maximum dencity (actually 100% in our case)... then you shoud experiment few other changing parameters as for fog near and far values in paralel with your
camera Far Renge and near Range , in order to make yourself a clear idea about how these
settings works together.

good luck,
karim

angel
07-08-2006, 05:09 AM
Well, better late than never. Here is my take on it, there are still some things I'd like to do like subtle caustics some texture fixes etc... having some graphics card issues right now so the colors might be off.

http://www.motionblurstudio.com/misc/boardwalk.jpg

kevb3d
07-08-2006, 05:29 AM
Akwavox, thanks for the texture info, I like it :)

JCBob, thanks for the kind words.

MrBobble, uhh....yeah....I yeild...great image, inspiring actually.

Jeremy, I took your advice on the occlusion and highlights. I added slight AO and a bounce near the highlight. I also broke up the fog to give some density to the water near the desaturation distance. Thanks very much for your feedback, and again for hosting these challenges and being a mentor to so many of us. We all appreciate it!

Here's my latest dirty, grimy, and all around slimy render...

http://img92.imageshack.us/img92/1417/kevb3dunderwater33nn.jpg

Kev

kary
07-08-2006, 05:34 AM
http://img141.imageshack.us/img141/9405/undertheboardwalk1zv.jpg
Late start, but here is a first pass. I need to correct the composition a bit, it might be a bit over blurry in general, and I haven't touched on the fish and dock yet.

---

Very different environment to be rendering, and looking through reference is practically a mini vacation ;).


Great thread. There has been a lot too learn, and a lot of great images are coming together :).

kevb3d
07-08-2006, 05:42 AM
Hey, you guys i'm just wondering how some of you wnet about creating the "fog" underwate,r to give it that nice effect? i'm using max 8, and like the fog effect just isn't really working, and i don't know how to go about it, i'm using mental ray.

Jonathan,

I have slight fog on in XSI, and I'd use physical fog if I were doing this in Maya or ground fog in Lightwave. However, I'm rendering everything, including the volumetrics, out in passes, then putting the image back together in DFX+. I'm rendering with depth so I can add depth fog in post and tweak to infinity.

I hope that helps.

Kev

slipknot66
07-08-2006, 05:43 AM
wow, all nice images.:thumbsup:
Here is my start, its not finished, but i think its a good start :)
http://img147.imageshack.us/img147/5897/preview18tm.jpg (http://imageshack.us/)

jeremybirn
07-08-2006, 09:55 AM
slipknot66 - Good start. The really saturated green underwater jumps out at you compared to the murky colors, maybe toning that down or mixing up more greens underwater would help.

kary - Nice start! Very "lush" looking image. I like the slimy look on the rocks! The caustic pattern might get brighter (on the tire it is so much dimmer than the specular highlight that they don't look like part of the same sunlight) and a bit blurrier?

kevb3d - Still nice! Maybe some areas are losing definition, like the shape of the tire, so don't go too far in obscuring everything. The sense of contact I guess is getting a little better, the contrast between the lower right corner of those rocks where it goes black, and the brighter ground underneath them, still doesn't make them look like they are touching. I don't know if that's a lack of fill or bounce on the rocks or a lack of occlusion on the ground or both?

SNoWs - Nice looking into the sun area! I like your dirt and murk too. It would be great if you could carry more of the lighting into the underwater area, and put some shadowing in front of the rock and pier. Maybe more of the objects could use some rim or kick to make them look toplit or backlit as well?

RobbieBaker - Welcome! That's a great start. Underwater could use more shadowing and murk, and maybe DOF with softer focus in back if you can do that?

lagatta - Welcome! Perspective fine keep going.

JoeB2C - Good start! Can Brazil do some murk or fog or DOF or particles?

-jeremy

jeremybirn
07-08-2006, 10:01 AM
This is a simple map, made by Aurety a french CG artist.
The map is still avaliable on frenchcinema4d.com
If you are interrested, here is the direct link ;)
http://www.frenchcinema4d.com/hub.php?doc=modele&modele=253

Thanks for the link to the map! Now I see why the bottom of the fish have been going so bright, they have highlights painted into the map.

In your image, the fish that are farther away are looking good. The 2 close to the camera look weird with the scales on the lower fin, eyes mismatched between texture and geometry, I'd say either fix the texture or don't put fish that close.

Overall it is a nice, colorful image. The sense of contact between the rocks and the ground could be improved if the dark edges of the rock matched the darkness of the shadowing or occlusion of the ground right under them I think.

-jeremy

jeremybirn
07-08-2006, 10:09 AM
well, i think salt adds density to the water, so the salty water IOR should be slightly upper than pure H2O. However the "water surface" downloaded for this thread could be both sea or lake.

I remember once, swiming in the vancouver region... I had noticed that the water wasn't realy sulty, as I couled open my eyes "under water"... so, the saltyness level of water, changes between different regions of the world and I do beleive that getting 0,01% more or less IOR is quite far to be considered as a priority in 3D.

...may be I'm wrong but that's what I think?

karim

That sounds like one of those issues where the only way to see is to make a set of test renders. Hope you share your results if they are interesting.

Small tweaks between an IOR of 0.75 or 0.76 can make a difference, but things like the amount of bump mapping on the water surface can make a much bigger difference to the refraction.

-jeremy

dany_x
07-08-2006, 10:21 AM
http://members.lycos.co.uk/lenour/underwater01.jpg
Hi this is my first test with uderwater,
Vray was used for rendering:
- only one vray sphere light, very high from the scene with about 700 multiplayer.
- GI: Irradiance + QMC
- post production in photoshop

jeremybirn
07-08-2006, 10:39 AM
titanwong31 - Welcome! (What a "modest" username! :) ) The overall colors and painterly look for the water are making a nice image. Maybe the foreground is a bit too crisp and uniformly lit?

raghuramp - Welcome! That's a really nice image: restrained color scheme but still a lot of definition, pretty good directionality to the lighting, nice murk and algie underwater. I really like how that fish head comes out from the tire. Maybe the immediate foreground has just rocks that are too regulardly spaced, and copying some grass there or something else could break it up. The bottom of the boat looks strange, maybe because the wood texture lines up with the water line to cause confusion. I like the water surface, too, nice wave patterns and definition.

Zorbi - Welcome! That's an interesting image already. It's hard to tell where we are, with the fog beam appearing above the water surface it looks like we are very deep somehow, but then there's not much fading or murk with distance. I guess the overall underwater look could go farther, and if you are going for a wide shot like that copy some grass and rocks out farther.

Shankar - Your image is looking terrific. (This is post #256 I know I've commented before.) Maybe the shadowing under the rocks is an area that still could be better, and the caustics might be a little softer?

Maven - Keep going!

karimD - Did I comment on yours yet? If not, sorry I've been slow. I like the soft looks you are exploring underwater! When the fog gets murky, I think the shadows and lighting underwater should also get very soft.

-jeremy

jeremybirn
07-08-2006, 10:43 AM
Particles suck! I decided to fake the dirt particles issue with a fractal 3D texture in the color channel of my lightfog. It's thousand times easier than to fool around with Dynamics. I admit that I was too lazy texturing because I wanted to focus on lighting. Also, I added some noise and blur in Photoshop.

http://theimagehosting.info/images.php/i835_myUnderwater13.jpg

That's a nice start, interesting image.

-jeremy

jeremybirn
07-08-2006, 10:46 AM
http://img57.imageshack.us/img57/5067/overandunder0ub.th.jpg (http://img57.imageshack.us/my.php?image=overandunder0ub.jpg)



Hey Andy -

That's cool. I actually like having the drops all over, not just on the top part. Whether they are drops between layers of glass or bubbles underwater is not clear, but they do add to the image. Very "wet" looking!

-jeremy

jeremybirn
07-08-2006, 10:48 AM
http://roof44.zizkov.net/3d/lighting_underwater.gif


Hey -

Nice one, congratulations!

-jeremy

jeremybirn
07-08-2006, 10:56 AM
dany_x - Welcome! Keep going with that underwater look: softer lighting, murk?

-jeremy

Zorbi
07-08-2006, 11:13 AM
New Version

http://forums.cgsociety.org/attachment.php?attachmentid=98242&stc=1


And High-rez: http://www.3dluvr.com/tobias/wip/Lightingchallenge_Test02_Final_v01.jpg

Pasargad
07-08-2006, 11:54 AM
i love this challenge, thank every body

Gabba
07-08-2006, 11:56 AM
I'm trying to do something but I don't understand how to achieve the effect of the light decay trough the water... (image clean near the camera and then become blue/dirty far from the camera). Can someone tell me the right way to achieve this kind of effect?? =)
Thank you very much!!!

Gabba

(I'm using maya =)

rende
07-08-2006, 12:55 PM
Gabba: Im trying to figure this out too, I have made a little progress tho. I think we have to use the parti_volume shader (plug this into the volume shader slot on the SG node). Set the scatter to (0.05,0.05,0.05) and extinction to 0.03. I've managed to get the fog effect working, but as soon as i turn on raytraced shadows everything goes haywire.

By the way.. you'll see a mode setting on that parti_volume shader, if you set that to 1 you can use the height setting to cause the "fog" to be more dense and the bottom and transparent at the top.

danchez
07-08-2006, 02:15 PM
thanks Jeremy

hey guys,
i found this great color studies by george hull
http://www.ghull.com/art/nemo/nemo_02.php

mikelima
07-08-2006, 02:59 PM
hello, this is my try; still WIP

http://www.mikelima.de/cgworld/undertheboardwalk_c060707ak_bea.jpg

rende
07-08-2006, 03:37 PM
mikelima: wow. how the hell?! :eek:

dany_x
07-08-2006, 05:01 PM
next try, now its time for textures:
http://members.lycos.co.uk/lenour/underwater02.jpg

karimD
07-08-2006, 05:18 PM
Hi, and thank you Jeremy for the advice. I also find my shadows unapropriate and will try to find a solition for that.

karim

FrizzleFry0
07-08-2006, 05:18 PM
I really like the feel and dirtiness you get from this one. Maybe it could use a little bit more saturation and adjustment to give the water a bit more color. You can see how things fade off as they go farther back, but it still seems like the water might be a bit too "clear." Keep up the good work :thumbsup:



hello, this is my try; still WIP


http://www.mikelima.de/cgworld/undertheboardwalk_c060707ak_bea.jpg

karimD
07-08-2006, 05:25 PM
oh yes, I like the mikelima post too.

karim

Zorbi
07-08-2006, 05:34 PM
Here's my Final Version.

http://forums.cgsociety.org/attachment.php?attachmentid=98250&stc=1


High-Rez:

http://www.3dluvr.com/tobias/wip/Lightingchallenge_Test02_Final_v05.jpg

angel
07-08-2006, 07:35 PM
very nice work everyone!
nice image mikelima and zorbi :thumbsup:

Thanks for the input Jeremy; I'm still having color issues with my graphics card and it's hard to tell if I'm in the right track or not, hopefully I'll have another update to show tonight, I'll post a smaller pic too... hopefully

karimD
07-08-2006, 08:37 PM
bravo zorbi, nice tuch.

jeremy... as saied, I rerendered my scene with more suftness in shadows. I also added floating extra particles.

karim

http://www.yboo.net/karimd/subaqua7.jpg

2k Render (http://www.yboo.net/karimd/subaqua7l.jpg)

mbeazley
07-08-2006, 08:51 PM
Good job everyone, this challenge is generating some wonderful renders.

Here are my final entries. Still going for the murky back woods pond or lake.

-mark

JoeB2C
07-08-2006, 10:05 PM
Man, awesome renderings all! :thumbsup:

Well, here's my final entry, I used all sorts of techniques, from photons to sss, from dof (on the particles) to volumetric fog. Hehe, I also used the caustic image as a projector map, thanks to who put it up!
Rendered using Brazil.

All in all I thoroughly (sp?) enjoyed this, can't wait till the next challenge. :D

http://img207.imageshack.us/img207/1949/underwaterscene028nz.jpg

silvia
07-09-2006, 12:23 AM
Gabba: Im trying to figure this out too, I have made a little progress tho. I think we have to use the parti_volume shader (plug this into the volume shader slot on the SG node). Set the scatter to (0.05,0.05,0.05) and extinction to 0.03. I've managed to get the fog effect working, but as soon as i turn on raytraced shadows everything goes haywire.

By the way.. you'll see a mode setting on that parti_volume shader, if you set that to 1 you can use the height setting to cause the "fog" to be more dense and the bottom and transparent at the top.


Yep that sounds right, except that every time I try it, Maya crashes and burns on me... :( I guess the memory becomes scarce when rendering volumetric effects.

BTW, I was out for less than a week and the renders I found in the thread are AMAZING! I better get back to work on it fast!

oddguy
07-09-2006, 05:30 AM
Ok, didn't have much time but I wanted to play along too. Took me 4 hours with 4 lights, hypervoxels and volumetrics. No caustics or radiosity (too long to preview...) Didn't spend much time texturing, really wanted to focus on creating the mood and feel with the lighting more than anything.

Gabba
07-09-2006, 08:22 AM
Ooooooook, thank you very much Silvia and Rende! I'm gonna try this thing another time =)

Gabba

EternalArt
07-09-2006, 02:06 PM
Hi guys .. this thread is very interesting
I didn't have much time , but I want to share

I used luma tool shader for the surface water and global illumanation for the lighting and AO pass with some touch if photoshop .

angel
07-09-2006, 03:35 PM
ok, I gave my image more love ;)
need to fix the caustics of the boat...
http://www.motionblurstudio.com/misc/boardwalk2.jpg

jeremybirn
07-09-2006, 03:54 PM
Eternal Art - Nice! Right now the lighting direction is confusing, the shadow coming away from the pier goes one direction, light on the fish another... maybe light the whole scene with one infinite/directional light for the sunlight to simplify. Other thing to fix is black line along the back edge.

oddguy - That looks good - if there are things to fix, I'd work on some kind of DOF or murk so we don't see that far edge where the water meets the ground so clearly. Also, the color scheme seems a little too monochromatic to me, maybe the sun/sky colors could be a little different?

JoeB2C - Great, see you on the next one!

mbeazley - Great. Looking at both, I like the one on the right better: it has some depth and variety to the shading.

karimD - Nice! I like the fish on the left (the one turning the corner), its lighting and reflections really work with the scene.

Zorbi - Nice, much improved final version.

-jeremy

jeremybirn
07-09-2006, 03:57 PM
hello, this is my try; still WIP

http://www.mikelima.de/cgworld/undertheboardwalk_c060707ak_bea.jpg


That's looking great! The lush, organic vegetation feels as if we are in a tropic rainforest. The DOF adds to the image too. If there's an area to focus on, it's the water look itself, making it feel as if we are actually in and looking through the water. You've got some murk and floating stuff already, but it still feels a little like a dry space.

-jeremy

EternalArt
07-09-2006, 04:56 PM
Thank you Jeremy for critique.. :thumbsup:
If i have a few time , i will try to fix what you are talking about

mikelima
07-09-2006, 06:46 PM
That's looking great! The lush, organic vegetation feels as if we are in a tropic rainforest. The DOF adds to the image too. If there's an area to focus on, it's the water look itself, making it feel as if we are actually in and looking through the water. You've got some murk and floating stuff already, but it still feels a little like a dry space.

-jeremy


Perhaps the grey Rocks makes it dry... I will try some Reflections on it. And I must find a good Eyecatcher/a Story!!!

angel
07-09-2006, 08:51 PM
ok, here is my final. I just fixed the incorrect caustics on the bottom of the boat.
This was a fun excercise, I'm looking forward to the next one.

http://www.motionblurstudio.com/misc/boardwalk_final.jpg

meelie
07-09-2006, 09:13 PM
First time on here!
Great contest -amazing renders on here -almost afraid to post
but what the hey!

I Wanted to try this out using Mental ray in Max.

Havent got my head around caustics yet so added those in Photoshop
by flipping the render then changing blend mode and using layer mask.

Also had to add the fog in Photoshop- couldnt get Max fog to work out-not sure why!

lotaH
07-09-2006, 09:58 PM
wow, all nice images.:thumbsup:
Here is my start, its not finished, but i think its a good start :)
http://img147.imageshack.us/img147/5897/preview18tm.jpg (http://imageshack.us/)

Very good!! Congratulations!

[]'s
Diego

White Boy
07-09-2006, 10:18 PM
Here's my second attempt:

http://img.photobucket.com/albums/v487/whiteboywithsideburns/lighting_2.jpg

Distal
07-09-2006, 10:42 PM
This is my first try at the lighting challenge and i found it to be a very good exercise. This underwater lighting is really tricky, and its very interesting to watch this thread and the many good entries here.


http://img367.imageshack.us/img367/4149/lighting016pe.jpg

sri
07-10-2006, 02:33 AM
Hi everyone, This is my first attempt on a challenge in CGTalk,

WIP, Please comment,

http://img333.imageshack.us/img333/4157/sridharundertheboard6gu.th.jpg (http://img333.imageshack.us/my.php?image=sridharundertheboard6gu.jpg)

thearchitect
07-10-2006, 03:36 AM
Glad I found this challenge. The last couple challenges and this one have produced some real nice work. All the work has been good. Its good to see so much vareity from a simple scene. This is my first attempt after working all of today. Max+Vray plus some photoshop tweeks. I hope to improve upon it and add some caustics maybe.

Some comments on the latest additions

dany_X: nice start. good colors cant wait to see more once it is textured. Whats with the large discrepancy between above and below water line. Not sure if that is correct, but im diggin the colors.

zorbi: sweet image. like the tropical feel. caustics and the volume light coming from the right looks real good. no crits really.

karimD: nice feel. like the softness of the image. would be nice to see more detail all around. parts look really good and detailed especially with the particles and stuff. i like the ghostly top maybe if you added some detail to the ground texture.

whiteboywithsideburns: nice job. i like the graphic quality and high contrast between above and below the water line. I cant decide which side i like better. The more i look at it the more i like it.

sri: looking good. i think below the water line looks real good, but maybe you could improve on the textures of the wooden pier. The top looks quite cartoonish, the bottom more realistic. I guess just take it one direction.

Distal: looking good. nice job on the grass and ground. Like the camera angle as well. the middle section looks a little strange to me where it transfers from ground cant make out whats going on there.

out of time....all the others are real nice as well(especially like snows{nice improvement} and mikelima{most realistic i have seen so far}). :thumbsup:

http://img153.imageshack.us/img153/585/624og.th.jpg (http://img153.imageshack.us/my.php?image=624og.jpg)

karimD
07-10-2006, 03:39 AM
First I would like to congratulate SNoWS,whiteboy and Distal for their grate job.
Here I'm posting the "day Time" version of a view posted before. To do that, I delited my "home-maid Dome light" and replaced my procedural back ground with an HDRI sky, previously made with "Vue". I also delited the main spot light, placed a "Vray sphere light" and added trees to the bank side.

Here you can see my 2K rendering version of this picture (http://www.yboo.net/karimd/subaqua8l.jpg)

karim


http://www.yboo.net/karimd/subaqua8.jpg

Shankar
07-10-2006, 04:12 AM
Hi Sridhar,
Welcome to the Under water Chanllenge. Your stuff looks good. Go ahead
-Shankar

mbeazley
07-10-2006, 06:04 AM
karimD - that water looks awesome! How did you do that? It really looks like some mucky pond water as if you scooped it into a glass.

sri - I am wondering if the fog effect would look better if it was clearer towards the top of the water line and got thicker as the water ends at the ground. Hard to call, I would have to see it.

The split water line effect seems to be quite hard. I tried a few renders and decided to just stick with what I already had going. Kudos to all who have done the split water line.

-----

Thank you for the comments Jeremy.

-mark

Shankar
07-10-2006, 06:58 AM
Hello Friends,

Thanks for your comments. Here is my work in progress. I added a fish in to the scene. Comments Plz
Thanks
-Shankar

http://static.flickr.com/77/186216657_8882d07686_o.jpg

meanlebh
07-10-2006, 12:30 PM
This is my first try at the lighting challenge and i found it to be a very good exercise. This underwater lighting is really tricky, and its very interesting to watch this thread and the many good entries here.


http://img367.imageshack.us/img367/4149/lighting016pe.jpg


Awesome Distal! I would say that there may be too much light directly underneath the dock, we don't get much of a sense of a shadow for it...but on the other hand, I really like the clear and readable image just the way that it is even if it isn't completely accurate....I love the pools of lights and darks as well. Great job.

-Brian

giriprasad73
07-10-2006, 06:44 PM
Its Great challenge for lighting, I thank the artist for model, I used to be a spectator for so long and one of my friend asked me to take this challenge. Let me try ….

This is going to be my first attempt on a challenge in here …

slipknot66
07-10-2006, 08:08 PM
All beautiful renders, well here is an update, still playing with this scene :)
http://img164.imageshack.us/img164/2730/preview28cd.th.jpg (http://img164.imageshack.us/my.php?image=preview28cd.jpg)

Pyrael
07-10-2006, 09:03 PM
Hope you enjoy my foolish try.
http://pyrael.de/pics/undertheboardwalk/003.jpg

Maven
07-10-2006, 10:39 PM
Hope you enjoy my foolish try.
http://pyrael.de/pics/undertheboardwalk/003.jpg

Don't be so hard on your sefl I think it looks good...it's difficult to make something look wet...I'm struggling myself.

silvia
07-11-2006, 12:19 AM
I think it has a very nice painterly look to it, Pyrael!

jeremybirn
07-11-2006, 02:28 AM
Pyrael - Welcome! That looks great! A lot of aspects of it are terrific. If there are things I'd look at it would be the "water look" in terms of particles or murk or DOF, and the texture on the boat. Other than that I'd say this is a great one already.

slipknot66 - That's great! Your eye is drawn to the red fish right away, and missing the head hurts the composition greatly. Try moving the fish.

-jeremy

jeremybirn
07-11-2006, 03:36 AM
Shankar - Nice! Foreground fish is a real scene stealer!

karimD - Another good one from you... the top of the left post looks a bit like wax (translucent) from the way the rim light hits it, some of the other materials like the boat are more spot-on, the boat feels like a solid thing right in front of me. The ground could use some shadows or occlusion to make the rocks look attached, right now they could be floating.

thearchitect - Interesting scene! Right now it looks "upside down" as if we were above the water surface. Maybe it just needs some murk and particles and DOF for more of an underwater look, maybe the water surface needs an IOR of about 0.75 for going from water to air. Caustics would be nice, often a texture map projected from a light adds a convincing effect instead of computing "real" caustics.

sri - That's great! I really like the underwater look with the murk and caustic pattern and green tinting. The water surface looks pretty good too, although I don't know what the white is on the posts right below the surface. The above-water areas could use better shading and more of a wet look, maybe even reflected caustic patterns?

Distal - Love it! Maybe some of the murk needs to be brought in a little closer? I wonder about the composition, with the white border and then the black edges of the pier right inside of it, although it might look different without the framing.

whiteboywithsideburns - Neat, you've got a nice painterly feel to that one. Maybe the front fog looks a little too 2D to be believable?

meelie - Good start! Try to go back and get things like the murk to work in your 3D program, projecing a texture from the light is a good workaround for caustic patterns.

SNoWs - As I said before, that's a great scene, congratulations!

-jeremy

raghuramp
07-11-2006, 06:35 AM
Hi,
Here is my next version image.JeremyBirn I am looking for your comments.
http://server3.uploadit.org/files/raghuramp-UnderWater_V2.jpg

Distal
07-11-2006, 09:57 AM
thx for comments !
meanlebh, you are right, theres not enough shadow under the pier. overall there would be lot to do on this image, like jeremy said for exemple the murk needs to be more evident. some particules in suspension would be cool also.

raghuramp : this version looks really good. only one thing for me is that maybe the "bump" effect on the water surface is a bit too strong. looks like sculpted glass on some areas. but your lighting on DOF give a good underwater feel !

laltu
07-11-2006, 11:09 AM
it is realy cool..Thanks Jeremy

JensDenker
07-11-2006, 06:42 PM
hey guys,
when does the challenge ends?

mikelima
07-11-2006, 06:47 PM
I´ve added al tillte thing... its from 3dtotal.

http://www.mikelima.de/cgworld/undertheboardwalk_d060711ak.jpg

silvia
07-11-2006, 07:10 PM
LOL! Love the skeleton... You may stillput a couple of fish around it, though, like picking the last of the flesh off the bone or something.

Pyrael
07-11-2006, 08:22 PM
There's my final
http://pyrael.de/pics/undertheboardwalk/final_sm.jpg (http://pyrael.de/pics/blog/bild%280-00-00-00%29-1.jpg)
Click to enlarge.

The hole image is only done with c4d shaders. The blur, noise and glow is done in AfterFX. Hope anyone like it. I cannot see the scene any longer.

thearchitect
07-11-2006, 08:22 PM
Cool addition of the skeleton Mikelima. Raghuramp I like the scene a lot. Has a good underwater feel. Thanks for the reply Jeremy. I agree that it looks upside down. And if you actually do flip the image it looks better. I think I am doing something wrong with my textures. Two questions.

To the people doing split cameras above and below water line. How do you do that do you actaully slice the geometry and put the camera outside looking in. Or do you just set up the camera at the water line which has not worked for me.

How do shaders deal with being in the solid itself and not necessarily looking through a piece of geometry. (im using vray)Are most peoples underwater effects created through a material or various lighting and fog techniques. Where the material only plays a role at the transition from water to air.

JensDenker
07-11-2006, 10:35 PM
so here is my wip folks.
i decided to bring in a bit of my own style. i want that it looks like a bit cartoony but i'm still very unhappy with the underwater surface, the volume light effects and some textures as well.
let me know what you're thinking about it.


http://static.flickr.com/56/187607284_123a429b66_o.jpg

raghuramp
07-12-2006, 03:00 AM
Thanks thearchitect and Distal for your comments.I am also waiting for the lighting guru(jeremy Brin) comments.

jeremybirn
07-12-2006, 03:17 AM
JensDenker - Good start for an illustrated look, but some of the glowiness above water looks very electronic, and maybe making the tops of the leaves pure white is a bit extreme.

Challenges never end, there are no deadlines and all are still open to new entries.

Pyrael - Nice one! (and welcome to the forum!) I clicked it and it looks even better at high resolution, except that you see some plants fading away into transparency.

mikelima - Neat, it looks like he's taking a rest out in the forest somewhere.

raghuramp - cool! I like the green murk and the silvery fish poking his head out from the tire! Maybe the foreground layers could be better integrated, so it doesn't look so much like a 2D row of grass, then empty ground, then more grass...

-jeremy

jojo1975
07-12-2006, 08:37 AM
@mikelima The skeleton is extra cool !

JensDenker
07-12-2006, 08:55 AM
thanks for reply jeremy.

here's an early render without the water:

http://img87.imageshack.us/img87/7579/ohnewasser3gl.jpg

my problem is that the watersurface is absorbing all the light because without water it looks good.. any suggestions?

ChrRambow
07-12-2006, 09:11 AM
Great contributions over here!


This is our attempt at the underwater lighting challenge.
We got rid of the refraction on the underwater part, because we liked it more.

http://www.art-3d.com/cgtalk_temp/uw_final.jpg

Maven
07-12-2006, 12:05 PM
Here is my latest update...I think this is it for me, can't afford to spend anymore time on it....

http://www.pbase.com/brows33/image/63375416/original.jpg

Leopoldo
07-12-2006, 01:16 PM
First post.

Leopoldo
07-12-2006, 01:23 PM
Second post.

Leopoldo
07-12-2006, 03:25 PM
Hi,

Here's my take on Under the Bridge. Hope you like it.

http://www.fabpics.com/cgtalk/underbridge.jpg

Jeremy –Thx for the challenge. Great fun!
ShadowM8 – Thx for the 3D layout.
Mikelima – great take on the skeleton. It's funny with sync and archetypical ideas ;)

Leo

PS I know it's not 3D but it is pencil and CG (Photofish)

lagatta
07-12-2006, 05:08 PM
hi,
so this is my second stage of the boardwalk. I tried to get a kind of moon and the dark sea situation. The problem i have is: i would like to see some more lightfog coming through the water surface. But i couldn´t get a solution. So comments and critics are most welcome.
thanks
jennifer

Just_David
07-12-2006, 06:18 PM
Great contributions over here!


This is our attempt at the underwater lighting challenge.
We got rid of the refraction on the underwater part, because we liked it more.

http://www.art-3d.com/cgtalk_temp/uw_final.jpg

would be great of some ppl would break the shots down for us ppl who dont ahve a clue..( me )

karimD
07-12-2006, 08:15 PM
Hi,

I liked many works in the last posting groupe... Jens, Christian, Maven and Leo's posts are quite eclectic and interesting.

Jeremy : once more, as I only couled give reason to your jugement, I started bringing the changes. However, the add of shadows for my under water elements broaght me to reconsider my lighting and going for a bunch of new tests and renderings.
Actually the renderer I'm using (Vray) got a strange behaviore with caustics... the caustic light "over-classe" the shading behaviore of light, so elements don't produce shadows at all. Right now, I'm ending my rendering processes and will be adding soon a new picture with "post-added caustics".

karim

Mak2005
07-12-2006, 09:11 PM
Amazing work guys ..

http://www.cgexpanse.com/phpBB2/files/underwate2r_105.jpg

silvia
07-12-2006, 09:58 PM
Jennifer, I have seen several posts about people that can't get enough light through the water to illuminate the underwater part. I think we are fogetting that the light doesn't have to filter through the water, it only has to look like it does. So why don't you create a light, place it wherever you want it, set the linking so that it doesn't illuminate the water, and procede that way?
I spent the longest time on this project trying to get everything physically right, but you can so easily cheat illumination, cheat fog, cheat caustics... and it takes less time too!

lotaH
07-12-2006, 10:41 PM
Hi friends,

Great images! :thumbsup:

After these works, do we already have the opportunity to do a summary of the necessary cares for a "under the Boardwalk" scene?

I don't agree a lot with ready "step-by-step" (in light), but I think can place advices.

[]'s
Diego

karimD
07-13-2006, 03:03 AM
Hi again,

as said, I totaly changed my previus light and "imaging" concept in this picture... I hope that you like it.
Jeremy : Thanks again for your support... I also hope that you'll approuve these chainges.

karim


http://www.yboo.net/karimd/subaqua9.jpg

>> 2K render (http://www.yboo.net/karimd/subaqua9l.jpg)

chikoritaKun
07-13-2006, 06:26 AM
here is my work...since everyone try very hard for this challenge, so i want to try also lah...gambatee...http://i43.photobucket.com/albums/e354/deBomb/underwater.jpg

power-3d
07-13-2006, 07:13 AM
hi ..
http://img135.imageshack.us/img135/7830/underwater0008iy.jpg

??

raghuramp
07-13-2006, 08:50 AM
Hi ,
Here is my 3rd version.Looking for your comments.

http://server3.uploadit.org/files/raghuramp-UnderWater_V3.jpg

the_bouille
07-13-2006, 10:34 AM
http://the.bouille.free.fr/up_cg/rendu_02.jpg

my work, done under 3dsmax , not finish yet i'd like to have particle pass and or smoke....
I hope you'll like it ,

I waiting for all C&C :) thk

mk3d
07-13-2006, 12:42 PM
Hi
There're very nice images here!
Here's my contribution:

BarberofCivil
07-13-2006, 12:57 PM
Two new renders, same viewpoint, different light angle. I finally broke down and faked the caustics by using a filter just above the water surface with the caustic maps posted by Jeremy. Actually turned out good with that 'streaky' volumetric look.

Light source directly in front of camera.
http://i69.photobucket.com/albums/i52/barberofcivil/UnderTheBoardwalk-11.jpg

Light source 90deg to the left
http://i69.photobucket.com/albums/i52/barberofcivil/UnderTheBoardwalk-12.jpg

silvia
07-13-2006, 05:16 PM
I am having a big problem, I wonder if anybody can help me with this.

I have to render different parts of the scene separately, therefore I am relying on the alpha channel for it. But those weeds for some reason don't come out with the right alpha, they still have a halo around them that is bugging the hell out of me. Of course, being complex shapes, I would rather not go in and manually paint the alpha around the edges. Any idea?

wilhelm
07-13-2006, 06:44 PM
I am having a big problem, I wonder if anybody can help me with this.

I have to render different parts of the scene separately, therefore I am relying on the alpha channel for it. But those weeds for some reason don't come out with the right alpha, they still have a halo around them that is bugging the hell out of me. Of course, being complex shapes, I would rather not go in and manually paint the alpha around the edges. Any idea?



must be a problem either of image resolution or your software. I have just testetd it right now and the alpha looks fine. It's difficult to help you without knowing more. Can you give some more details?

purpp
07-13-2006, 09:03 PM
I am having a big problem, I wonder if anybody can help me with this.

I have to render different parts of the scene separately, therefore I am relying on the alpha channel for it. But those weeds for some reason don't come out with the right alpha, they still have a halo around them that is bugging the hell out of me. Of course, being complex shapes, I would rather not go in and manually paint the alpha around the edges. Any idea?

Are u putting fog is post??
I ws having same problem. I then created seperate render partitions for the weends and rocks and rendered them seperately. Finally composited all layes

LukaStellwag
07-13-2006, 09:52 PM
hi ..
http://img135.imageshack.us/img135/7830/underwater0008iy.jpg

??

Very nice, i like those volumetrics. What software did you use and how did you proceed ? I like this image ... Wow.

silvia
07-13-2006, 10:46 PM
Are u putting fog is post??
I ws having same problem. I then created seperate render partitions for the weends and rocks and rendered them seperately. Finally composited all layes

The idea is that since the water, peer and ground disappear into the distance, I render those separately, and use Z-depth to create the fog, then render the rest of the objects separately and compose. When I render the other objects, I use the water, peer and ground in "black hole" mode, to make sure the rocks and similar get cut where they meet the ground, in the alpha. But when I render them, it is like the alpha is slightly bigger than the objects, and since the background on which I render is blue, every object has this blue halo around them that sticks out like a sore thumb. Problem is that if I "choke" the alpha afterwards, it seems that it eats into the weeds, and get this horrible segmented look, probably because they are so thin.
Any suggestions would be very welcomed.

pgraham
07-14-2006, 03:18 AM
every object has this blue haloSounds like a compositing problem to me, but still not enough information. Can you post your background and objects layers (with alphas)? Or a simple re-creation of the problem? And what software are you using for render and comp?

ChrRambow
07-14-2006, 05:53 AM
@Silvia: Maybe the solution for your problem is quiete simple.
Just render your weed with the similar green color in the background
Then the alpha should not got a white or black halo around.

Can you post some screens of the problem?
And like Wilhelm said ... the software you are using...

It is fun to see all this great work over here :)

silvia
07-14-2006, 07:06 AM
Sorry guys, and thinking how many times one of my customers has come to me telling me a problem without specifying anything, and now I am doing the same... :eek:

Ok, I am using Maya and Mental Ray, and compositing in After Effects, although the problem is not in AE. The images, left to right, are:
1) The diffuse pass for the objs to composite. This is to give you an idea of what I render when I do the pass with just these elements. The blue background is the camera's environment, and I use it with FG to simulate light coming from the blue sky.
2) The specular pass, clipped by the alpha. Notice the blue border around all the objects
3) The composited result. As you can see, if I tighten the alpha around the weed, they become all broken in segments, while if I leave the alpha as it is, like for the other objects, the blue border is very evident.

What to do?

Leopoldo
07-14-2006, 07:13 AM
Hi everyone,

I've reworked the waves, added some caustics and done some minor fixes. Cc welcome.

http://www.fabpics.com/underbridge/process/images/underbridge_01.jpg

2k (http://www.fabpics.com/underbridge)
Making of "Under the Bridge" (http://www.fabpics.com/underbridge/process)

Nice work everyone!
Leo

wilhelm
07-14-2006, 07:15 AM
@silvia

for me it looks like a problem of resolution or antialiasing. Maybe it works just increasing antialiasing.

karimD
07-14-2006, 07:40 AM
Very nice approche Leo... and well "illustrated Making of".

karim

BarberofCivil
07-14-2006, 12:15 PM
Yet one more. Turned the AA on and let it run overnight ~14hr.

http://i69.photobucket.com/albums/i52/barberofcivil/UnderTheBoardwalk-13.jpg

sri
07-14-2006, 04:43 PM
Thanks for the comments and valuable suggestions,

here is my second update,

http://img387.imageshack.us/img387/1776/sridharundertheboard8st.jpg (http://imageshack.us)

Hi Shankar, Your work looks cool, Thanks for the comments

pgraham
07-15-2006, 03:30 AM
silvia,
You have to get rid of the blue background before comping. Can you render the final gather without the environment showing up in the render? If you can't turn the env off, you may be able to just render it without premultipy. There's a premultiply option in mental ray globals under "framebuffer attributes." Then make sure AE knows it's not premultiplied.

jeremybirn
07-15-2006, 05:46 PM
sri - Looking good. If there's things to fix, it looks as if the brightest light is coming from the left, so the underwater fog beam could slant the other way. Also, that "marble" texture on the rock looks a bit similar to the caustics.

BarberofCivil - Nice! Could the grass be floating above the ground in that last one? I'm trying to figure out why the shadows in the fg are so far separated from the grass. If you're using an IOR above 1 (like 1.33) on the water surface, you might try a lower IOR like 0.75 instead (for a water to air transition.)

Leopoldo - Nice scene. I was looking at it, and I think I like it better when the sun/clouds area is cropped off, just because that makes the scene look more like a photo collage, whereas the rest of the scene has a nice illustrated look. Anyway, thanks for the "making of" section!

silvia - Don't render over a blue background. You can make an environment sphere visible to FG but not to primary rays, if you need it. Then you can render everything over a black background with a useable alpha channel.

mk3d - I like the right one (the one with water) better of course, but if you could make it partly transparent that would be even better.

the_bouille - Nice! Like you said, some murk would be a good next step. I hope once the murk and particles are working that you don't need so much vignetting (darkening of the edges) anymore.

raghuramp - Nice, a sortof "stormy" feel. I liked how some of your earlier images showed more of the lower fish.

power-3d - Nice scene! I wonder if that fish couldn't be made brighter and closer, to give a real story sense to the scene, and maybe we could move a little to the right so it isn't just on the edge?

chikoritaKun - Welcome! That's a good scene! I like your texture mapping, maybe the boat could use more as well. The water is looking good, you might see if you could make it more dark and murky in the distance?

karimD - Looking good!

lotaH - I'd love to see more breakdowns and behind the scenes as well!

-jeremy

jeremybirn
07-15-2006, 06:57 PM
Mak2005 - Nice! But maybe the water surface shouldn't be so clear as you move off into the distance?

lagatta - Nice start! In terms of getting light to come through the water surface, you can set the surface not to cast shadows if you don't want it to cast shadows. Also, you could put another surface there that isn't visible to primary rays but just casts shadows, and it could have a caustics transparency map or whatever you want to help with correct shadow casting.

Maven - Nice, the DOF adds allot!

KoRn_ART - That's a nice scene! I don't know about the refraction for the underwater portion, I kindof liked having something like that.

JensDenker - See what I just wrote to lagatta above...

More people should post screenshots, settings, and behind-the-scenes breakdowns of their scenes!

-jeremy

BarberofCivil
07-15-2006, 08:41 PM
BarberofCivil - Nice! Could the grass be floating above the ground in that last one? I'm trying to figure out why the shadows in the fg are so far separated from the grass. If you're using an IOR above 1 (like 1.33) on the water surface, you might try a lower IOR like 0.75 instead (for a water to air transition.)
-jeremy

Thanks for your comments.

I see what you mean about the shadows, but they shouldn't be be floating, I didn't move any of the objects. It could just be an illusion from the ground bumpiness.

As for the ior, I'm using a raytracer, so the camera is actually inside a solid water object which has an ior value of 1.33. The way POV works, the ior is applied to the interior of an object, not just across a surface, so the raytracer recognizes the direction of the transition (i.e., the water has an ior of 1.33, whether the camera is inside looking out or outside looking in). If I was to reverse the ior, I'd need to basically make the water hollow and everything else solid. I'm trying to go for more physically real results, therefore, from the camera angles I'm using, the water surface is a perfect mirror due to total internal reflection.

Martin Kay
07-15-2006, 11:03 PM
My attempt at the 'Under the Boardwalk' scene. Lit and textured with procedurals in c4d.
One main Infinite/distant light, casting a hard shadow. One omni fill at about 6% power.
One Infinite, directly overhead with a 'gel' for the caustic effect. The surface of the water is a transparent plane with 'fresnel' option and reflection. The main body of water is a cube with channel 'fog' applied.
http://www.martinkay-3d.com/fruit_light.html

jeremybirn
07-16-2006, 12:33 AM
BarberofCivil - Ah, OK, I guess I was wrong about what's going on with the water surface. Do you have any way to give it a little more variety so it doesn't look so ambient? Could it be that maybe the bump mapping is so high that it samples rays from all over, or something else going on?


Martin Kay - Nice aqua look, like a swimming pool. The way the caustics continue into the shadow of the rock kindof throws me off, I thought that'd be the same sunlight. So you say you have a fresnel option on the reflection? If its adjustable see if you can get a bit more variation so the distant part of the water is more reflective/less transparent, and maybe the top part less reflective?

-jeremy

Leopoldo
07-16-2006, 09:53 AM
Leopoldo - Nice scene. I was looking at it, and I think I like it better when the sun/clouds area is cropped off, just because that makes the scene look more like a photo collage, whereas the rest of the scene has a nice illustrated look. Anyway, thanks for the "making of" section!
Jeremy – Great topic! Thanks for taking the time to write. Those ripple filters in Photoshop are almost too good sometimes. I used a little filter/liquify pushing the background around as well and I think that I would do the ripple FX all by hand painting it in lifuify next time around, maintaining much more control over style and clearity in the focus areas. Stylistically I was going for the background painting style in "Spirited Away" which is very crisp and high contrasty, especially in the daytime, sun shots.

ShadowM8 – Thx for doing the modelling! Good job!

Everyone –Anyone know of other water FX filters/plug–ins for Photoshop that one can get (preferably version 7 but CS2 is fine as well)?

jtothec
07-16-2006, 10:07 PM
http://www.bettypageisablonde.com/cg/UnderTheBoardwalk.jpg

Brazil r/s

One area light (circular) and a mapped skylight. Fog (shocker).

small post in photoshop (dof)

h/t pete draper's deconstructing the elements (http://www.amazon.com/gp/product/024052019X/sr=8-1/qid=1153087248/ref=pd_bbs_1/002-1644185-1162439?ie=UTF8) for the "hey, I learned some of that stuff in that book!"

ChrRambow
07-17-2006, 09:46 AM
Thanks for the comment Jeremy.

Here is the version with faked refraction:
http://www.art-3d.com/cgtalk_temp/uw_challenge/final_low_refract.jpg


And some etra shots:

A closeup of the fish and it's UVW map
http://www.art-3d.com/cgtalk_temp/uw_challenge/fish.jpg

http://www.art-3d.com/cgtalk_temp/uw_challenge/uvw_fish.jpg

The ground with mapped caustics
http://www.art-3d.com/cgtalk_temp/uw_challenge/ground.jpg

The Hair/weed pass on the tire, stones and wood.
http://www.art-3d.com/cgtalk_temp/uw_challenge/hair.jpg

and some scene shots:
http://www.art-3d.com/cgtalk_temp/uw_challenge/shot_uw.jpg
http://www.art-3d.com/cgtalk_temp/uw_challenge/shot_above.jpg
http://www.art-3d.com/cgtalk_temp/uw_challenge/shot.jpg
http://www.art-3d.com/cgtalk_temp/uw_challenge/shot_top.jpg

Shankar
07-17-2006, 10:52 AM
Hello Friends,
Here is My work In progress. Comments Plz...
Thanks
-Shankar

http://static.flickr.com/71/191612101_cdb3471c04_o.jpg

Shankar
07-17-2006, 10:54 AM
Hi Christian, Nice Piece of work. I like the way you break down your Shot. This Challenge is getting better and better.
- Shankar

silvia
07-17-2006, 04:24 PM
Good job Shankar, but why is the fish making bubbles? ;)

jojo1975
07-17-2006, 04:41 PM
Here first WIP. Happy with caustics, still to texture fishes (I hope to have time).
Any hint for how tro make "grass" on tire and plank ? Helo would be very appreciated ;)
All is fake.. used two directional light with projection map and volumetric fog.
To water surface applied a displacement map.
Used a water material with no diffuse (black), small reflection and almost 100% refraction with IOR of 1.3.
Congratulations to all the wonderful works posted here :)

Jojo

http://www.webalice.it/giorgio.luciano/CGTALK/under1st.jpg

Mak2005
07-17-2006, 05:53 PM
Here,s the updated version http://cgexpanse.com/phpBB2/files/underwater2_for_web_914.jpg

Martin Kay
07-17-2006, 09:39 PM
Here is my third version with fresnel applied to the transparency and reflection channel of the water surface shader. Quite a tricky scene, not sure if things are quite right yet...

http://www.martinkay-3d.com/fruit_light.html

Martin K

Just_David
07-18-2006, 03:24 AM
KoRn_ART thnx for breking down your shot, helps alot. Anyone else fancy breking down theirs, tbh im lost on how to approach this and little things like that helps lots.

raghuramp
07-18-2006, 05:52 AM
Hi ,
Here is my another version.Jeremy looking for you......

http://server3.uploadit.org/files/raghuramp-Underwaterv4.jpg

titanwong31
07-18-2006, 07:01 AM
Tq alot for all of your comment. Here is the latest work with texturing and final lighting. Please give me any comment to improve on this.

http://img220.imageshack.us/my.php?image=underwaternewgk8.jpg

BarberofCivil
07-18-2006, 12:20 PM
Yet another run at it with some changes based on Jeremy's comments. I toned down the water ripples and made them a bit smoother. Ialso checked on the weeds at the bottom,and some of themwere indeedfloating above the ground so I lowered them (it appears to be in the base scene though, I'm surprised noone else has mentioned it yet)

http://i69.photobucket.com/albums/i52/barberofcivil/UnderTheBoardwalk-14.jpg

silvia
07-18-2006, 04:23 PM
Tq alot for all of your comment. Here is the latest work with texturing and final lighting. Please give me any comment to improve on this.

http://img220.imageshack.us/my.php?image=underwaternewgk8.jpg

Nice job, but I have a couple of comments. I am not sure if you are aiming for a realistic or a illustration effect, but if you are going for realism then I am not sure about the underwater flowers, and there is a bit too much red in the underwater part. The red frequencies of light are absorbed very easily by water, so the deeper you go, the less red you see, because of course, you can only see light that is reflected back to your eyes. It takes very little to take the red out of objects almost completely, which is why for example, people diving in the coral barrier can be surprised that the color of the corals and fish isn't as bright as they expected from seing pictures of it, when in fact the reason they see reds in underwater pictures is that a diver is shining a light straight at it, close enough to the subject to see the red before it is absorbed by the water. So I would tone down the red component of your image.

jeremybirn
07-19-2006, 01:48 AM
BarberofCivil - Looking good! I wonder about the richly saturated green tone: with that bright a green it looks algae-infested, I wonder about less saturation?

titanwong31 - I agree with Silvia. More depth-fading and more subtle colors might help the underwater look.

raghuramp - Nice! I like the color scheme and the DOF.

Martin Kay - That's nice, but the contrast around the edge of the rocks (rocks going black on the dark side, but no matching tones in the shadows/occlusion where they touch the ground) makes it stand out as CG. You might use some more directionality to the shading on some things like the underwater parts of the pier, the posts are going a little flat.

Mak2005 - lovely, nice illustrated quality. If you wanted more realism you could make more of the water surface reflective, but it looks nice now as a stylized image.

jojo1975 - The floor of the lake looks great! Maybe the edges of the nearby rock are too dark/crisp, but that's a small issue. I can't figure out what the middle blue thing is in the water surface. (Top blue thing = sky through snell's circle. Bottom blue thing = boat. But what is the middle blue thing, to the right of the dock? Is it another snell's circle in a displaced part of the surface? Does it have to match the boat?)

Shankar - Looks good! I like the little vegetation!

KoRn_ART - Thanks for the breakdown! I love it! Laughed out loud at the way you "modeled the refraction" by cutting the whole scene in half and translating sideways! (Image still looks great, too!)

jtothec - That looks great! I wonder about the color scheme - does everything need to be that saturated (the deepness of the blue shadows, the mid-ground warm tones of the ground?) I bet you could make a new version picking some underwater reference picture and tweaking the color scheme to match it.

-jeremy

FrizzleFry0
07-19-2006, 04:50 AM
The images are all coming along real nicely! I think the most common issue with them so far is that the water looks too pure and clean. It'd be kinda cool if a few people can maybe do some variations with particles, debris, etc in the water.

Possibly using different render passes of alpha planes, fluids, or all in post via randomize nodes.

Shankar
07-19-2006, 07:45 AM
Hello Siliva and Jeremy. Thanks for the comments.
-Shankar

jucaduarte
07-19-2006, 05:35 PM
oh my.., korn_art and shakar, great jobs!
congrats

:D

jD

Mak2005
07-19-2006, 09:57 PM
Thanks Jeremy , Thanks for comments trying to improve . :)

silvia
07-20-2006, 03:58 AM
Ok, I finally got the hang of it. Thanks to everybody for helping me with this!
This challenge was hard, I am pooped and the power supply of the poor computer is half burned, with all those rendering hours. Well, here is my final attempt, not my best image ever, but I learned tons of stuff from this challenge.
http://www.silviapalara.com/portfolio/underwater.jpg

titanwong31
07-20-2006, 08:22 AM
tq for Silvia and Jeremy's comment. the image initially was meant to be some colourful underwater for postcard design somethg like tat. it is stylize and make like painting look.
After the comment, here come another new version of it.

titanwong31
07-20-2006, 08:25 AM
here is the image

http://img214.imageshack.us/img214/2523/underwaternew01dz7.jpg

giriprasad73
07-20-2006, 11:05 AM
Wip ......


http://img226.imageshack.us/img226/2916/wipfm5.jpg (http://imageshack.us/)

dahitokiri
07-20-2006, 06:20 PM
Hey all,

This is my first post on CGS, but I absolutely love it here, so informative. Anyway, Here's my attempt at the lighting challenge. I was going for more of the pure dark water...I may change that at a later date due the whole depth issue. Please let me know what I can improve.

http://img481.imageshack.us/img481/144/underwater1od9.jpg

Also, if anyone can let me know what kind of plants are modelled as "plants", it would be very helpful.

jojo1975
07-20-2006, 09:12 PM
Here a rerender
http://www.webalice.it/giorgio.luciano/CGTALK/under2nd.jpg

thanks to jeremy I've corrected the blue spot on the right of tha image and adjusted a bit the color of the rocks . After studying a bit I discovered it was a part of the sky reflected in the water. Before rerendering I used a falloff material very blue at the base. Now changed with a uniform blue sky less similar to the color of the boat

@ dahitokiri I've found in wikipedia a lot of infos and photos about the plants.. that are seaweeds and not algae ;)

@ giriprasad73 very good start ! I will be very happy to see the finished one ! keep going ! I love sunsets (or sunrises.. difficult to spot the difference) I would change a bit the texture of the wood adding a bit more "noise"


I didn't find the time to texture the fishes but I've found a very interesting site with fish photos very useful for textures http://www.fishbase.org/ .. it could be interesting to study also the accuracy of the fish texture in the images ;)

Jojo

jeremybirn
07-21-2006, 03:05 AM
silvia - OK, great, it's Miller Time(sm)! Hope your poor computer's power supply recovers.

titanwong31 - Nice! It has a "storybook" feel to it.

giriprasad73 - Nice colors. I wonder if some murk or glow could cover over the line where water meets the land? Also, maybe some sedement or something could be put in place of the lens flare, just because the underwater environment doesn't seem quite contrasty enough for a flare like that?

dahitokiri - Welcome to the challenges! I think the specularity is making everything look like its made of colored tinfoil now, maybe you could tone that down and work on the murk?

jojo1975 - Nice! I think the thing on the far left is a gap between the water and the ground, maybe you could bring those together? And is there any way you could make the boat look more like a boat?

-jeremy

silvia
07-21-2006, 05:22 AM
silvia - OK, great, it's Miller Time(sm)! Hope your poor computer's power supply recovers.
-jeremy

Hey, now you are talking!!! More like mai tai time, actually...

neuromancer1978
07-21-2006, 05:08 PM
Well I took some time off because of internet security issues :eek: but now that I have finally gotten that out of the way I was finally able to re-render my scene. If I had more time to fix the problems this image would have been even better but I guess I just wanted to get this out here before the next challenge arrives. Rendered with Pixie (http://www.cs.berkeley.edu/%7Eokan/Pixie/pixie.htm).

http://imagehub.geekfury.com/files/6/images/lightchall_rerender03.jpg

giriprasad73
07-22-2006, 02:31 AM
Thanks Jeremy and jojo1975 , Thanks for comments . I will do the corrections

karimD
07-22-2006, 11:41 PM
Hi Jojo,

I think your water effect and caustics are grate... may be you shouled also enlarge the square of your light ( perhaps with fall-off ), in order to light all parts of your scene.

Good continuation,
karim

danmst3k
07-23-2006, 11:54 PM
Decided to have a go at the challenge. I used LW9 and a little PS enhancing.http://i97.photobucket.com/albums/l201/danmst3k/Underwtr_1.jpg

chikoritaKun
07-24-2006, 01:33 AM
tq Jeremy for the positive comment...here is the new pic.I did some changes for the textures and Fog...hope its pretty close to whats it should be.Tq everyonehttp://i43.photobucket.com/albums/e354/deBomb/new_underwater.jpg

chikoritaKun
07-24-2006, 05:38 AM
new images from me...after positive comment from jeremy...tq so much.
http://i43.photobucket.com/albums/e354/deBomb/new_underwater.jpg

kary
07-24-2006, 06:43 AM
I ran into some hardware problems (aftermath documented here (http://img140.imageshack.us/img140/6351/oldharddrivephotostoryed1.jpg) ;)) which stopped me cold, just starting to catch up now and had a chance to make a few changes tonight:

http://img522.imageshack.us/img522/9946/undertheboardwalknq8.jpg

A lot of very good work going on here. It's neat to see how you laid yours out KoRn_ART. It is quite something to see the variety of takes on the scene, time of day, different angles, etc, ties together though :)
http://img124.imageshack.us/img124/9384/undertheboardwalkpp5.jpg

ChrRambow
07-25-2006, 09:29 AM
Thank you :)

@ Jeremy: ;) i did it in that "brutal" way because C4D got a lot restrictions
in calculation of DOF together with transparency or refraction.

@ Shankar: the image is getting better and better. The way how the water
fades of with DOF and visibility is working really good. I am not shure about
the bubbles at the fish and would also add much more smaller dirt particles
in the background.

@kary: it is actually looking good ... maybe the tire is too clean and shiny.
The lighting in the second shot is good!

@chikoritaKun: The lighting and underwater feeling is fine ...
i would put some green plants on the tire too ...
because the tire seems to lay there for a long time...
if i am looking at how deep it is sticking in the sand.

Or the rubber-tire is that clean in saltwater? ...
I do not know that 100 percent.

@titanwong31: I really like the colors in your image ...
it is working like an image out of a dream or paradise.

Keep up the good works! :)

Shankar
07-26-2006, 01:58 PM
Hello Friends,
Thanks for your Comments. Especially to Cristian, Juca Duarte and Jeremy.
I added 3D particles to my scene. Here is my work in Progress. Your Valuable Comments Plz.
Thanks
-Shankar
http://static.flickr.com/63/198812989_9ec2167e3d_o.jpg

batfink
07-26-2006, 02:41 PM
Hello, it's my first post here (i'm very embarrased)
this work tries to achieve the foggy magic of the underwater, the blurry thing, some sense of being dived in a non-air element; of course i haven't reach that point.
C&C are welcome, thanks a lot.

BlumenKohl
07-26-2006, 07:54 PM
Been following these lighting challenges a while, very impressive works....

Being underwater, there was a lot of opportunity for some interesting lighting, so I decided to give this one a whirl...going for a polluted stream kind of look.

Not much, an hours effort, but it was fun. :thumbsup:

http://img73.imageshack.us/img73/1026/scit2ta3.jpg

danharing
07-27-2006, 06:22 PM
Very cool work. Any idea when the next challenge is going to start?

danharing
07-27-2006, 06:46 PM
BlumenKohl: Very nice. Really like the atmosphere you created. Mind telling what you used?

sri
07-27-2006, 11:44 PM
Thanking everyone for the comments and valuable suggestions,

here's my third update, Please Comment,

http://img140.imageshack.us/img140/7285/underthewalkingboardtg5.jpg (http://imageshack.us)

@ Giri, Welcome to the challenge, ur lighting mood is a great challenge to do, bring it on

@ Shankar, nice update, IMO the dirt particles density is a little high and the caustic effect is looking flat, u can increase more contrast depth to it

Bob27
07-30-2006, 11:58 PM
I have seen many beautiful images in this challenge #5 so far, but Shankar's latest image impressed me most... Congratulations Shankar, Great work ! :thumbsup:

MasterZap
07-31-2006, 10:38 AM
I really love the look of this, and I think Jeremy will appreciate the bottle thrown in as a reference to the last challenge ;)

/Z


Hello Friends,
Thanks for your Comments. Especially to Cristian, Juca Duarte and Jeremy.
I added 3D particles to my scene. Here is my work in Progress. Your Valuable Comments Plz.
Thanks
-Shankar
http://static.flickr.com/63/198812989_9ec2167e3d_o.jpg

jeremybirn
07-31-2006, 05:22 PM
I'm at SIGGRAPH in Boston now, typing on a little powerbook, so I won't attempt to give feedback on individual posts during the conference this week. But I'd like to say that some of these are looking great, and I'm equally glad that other people are stepping up and providing feedback while I travel.

Thanks,

-jeremy

giriprasad73
08-01-2006, 04:33 AM
Busy Shifting my house, anyway I am seeing lot of good Images. All the best!!

Iam sending my updated Wip… Please comment


http://img206.imageshack.us/img206/8250/wip2wp6.jpg (http://imageshack.us/)


@ Sridhar A: Your lighting and underwater feeling is fine... Top and bottom looks Great separately. Think needs some change in cloud and add particles to scene ………

JCBug
08-01-2006, 05:18 PM
@ giriprasad73 - Very nice twilight lighting, and the water surface is great,
but the underwater seems dry, and there is no caustics and no particules.
Maybe the tire material needs to be darker.
Good job !

@ sri - Your caustics are wonderful !

@ danmst3k - Great image ! (better than mine)
I've done in the same ambiance and colors.
I think you should paint the boat...

@ Shankar - Your particules are nice (too much ?),
and the sand too. But the fish seems no real. Maybe the shadows ?
Great picture.

karimD
08-01-2006, 05:21 PM
Hi Jeremy,

have a grate time.

karim

kevb3d
08-02-2006, 09:26 PM
It's been a while since I've been here, but WOW, some of these are looking great! I'll offer up my critique, but preface this by saying that until I get back in this game and prove that I know something, take it with a grain of salt hahahahaha.

giriprasad73-

I love the direction of this image. The sunrise/sunset mood is well produced above water. Underwater is looking a bit flat. Try to use some light linking and round out the objects that are underwater a bit more. Push it to the extreme, you can always scale back. Keep going, I really like this piece.

Shankar-

Thsi is good. I like the particles and the sediment on the rocks, etc... I'm wondering what is producing the strange glow around certain objects though... There also seems to be a high contrast in the image overall. Tone it down some and keep going. I still like the fish texturing :)

Sri-

This is a very illustration looking image. I like it, it's clean and good. The angle of the water might use a little more incidence, I'm not sure...

BlumenKohl-

I LOVE the mood. Maybe add some more bounce light around to make it more punchy, but it's cool.

kary-

The "anisotropic" hit on the tire is good, but I'd break it up a bit. Right now it's a little too smooth. Breaking it up would add some more dimension to it and make it less distracting.

chikoritaKun-

Try adding some particles and atmosphere to break it up a bit.

Keep up the great work. I want to dive back into this as well. It's a really great thread!

Jeremy, while your in Boston, try to get over to Harvard Square and try the Fire and Ice restaurant. It's awesome if it's still there. You can take the T-line over. It's Mongolian BBQ style and all you can eat. Not too pricey, and I loved it. I love Boston, too bad I'm in LA now and already made 2 trips to NY/NJ in the last month and a half. I'd have loved to go to Siggraph....grrr....

Kev

sri
08-06-2006, 02:34 AM
@ kevb3d, JCBug, giriprasad73, Thanks for the comments and valuable Suggestions

http://img46.imageshack.us/img46/3328/underthewalkingboardsmwm2.jpg (http://imageshack.us)

High Resolution (http://www.sridhar.devisland.net/images/Misc/Underthewalkingboard.jpg)

Please Comment, I will post the break down soon,

@ Giri - nice update, the plants are very nice, i think the bump on the grass is too much, the pillars and rocks are looking dry

nojak
08-06-2006, 03:02 AM
Hello Friends,
Thanks for your Comments. Especially to Cristian, Juca Duarte and Jeremy.
I added 3D particles to my scene. Here is my work in Progress. Your Valuable Comments Plz.
Thanks
-Shankar



personally, i think there are too many particles. it seems to kinda flatten the scene, and distract from things. i'd go back to fewer particles. i thought it looked much better then.

kevb3d
08-06-2006, 07:48 AM
@ kevb3d, JCBug, giriprasad73, Thanks for the comments and valuable Suggestions

http://img46.imageshack.us/img46/3328/underthewalkingboardsmwm2.jpg (http://imageshack.us)

High Resolution (http://www.sridhar.devisland.net/images/Misc/Underthewalkingboard.jpg)

Please Comment, I will post the break down soon,

@ Giri - nice update, the plants are very nice, i think the bump on the grass is too much, the pillars and rocks are looking dry

Sri,

Breaking up the surface was definitely the way to go. In the last one you had a ripple effect but didn't break it up at the lens, this one you do. I like it.

Kev

nojak
08-07-2006, 06:27 AM
Sri,

Breaking up the surface was definitely the way to go. In the last one you had a ripple effect but didn't break it up at the lens, this one you do. I like it.

Kev

agreed. definitely looks much better than the first one, with the way the water seperates. awesome job!

vjk
08-08-2006, 07:41 PM
Hi to all,


Here is my first post to the Lighting Challenge Series. First up, a lot of great stuff in these challenges and it feels really great to be a part of this inspiring experience. I really like the high level of activity in this forum; comments ,criticisms and posts coming in real fast, almost like a party!
http://www.flickr.com/photos/74019386@N00/210300496/http://www.flickr.com/photos/74019386@N00/210300496/
http://www.flickr.com/photos/74019386@N00/210300496/
So, here is my first render, no work on the model whatsoever, just played a little with the lighting( Maya - MentalRay combo). I feel clear water doesnot go in with the sunken tire, the sunken bucket and weeds, as they suggest a long time of negligence. So I left the water to the default shader to get that murky look(planning to do some work on that though; probably more ripples, floating particles etc.) . I am currently working on the second version with a little bit more work into it, like subdividing the models and proper texturing and cleanup.

Looking forward to the next post...

herbertagudera
08-09-2006, 03:20 AM
@ kevb3d, JCBug, giriprasad73, Thanks for the comments and valuable Suggestions

http://img46.imageshack.us/img46/3328/underthewalkingboardsmwm2.jpg (http://imageshack.us)

High Resolution (http://www.sridhar.devisland.net/images/Misc/Underthewalkingboard.jpg)


nice!!! i love it!


vjk - great start!

i just wish i couldve join the challenge.

jojo1975
08-11-2006, 12:13 PM
Since i had problems with texturing the boat I added another one ;) Going on vacation.. hope to add some new images at the end of the month.. good holidays to all ..seen some astonishing work here :)

http://www.webalice.it/giorgio.luciano/CGTALK/underbet.jpg

vjk
08-12-2006, 03:08 AM
Hi Everyone!!

http://www.flickr.com/photos/vjk_h3d/
Here is the link to my second version. This link takes you to my PhotoStream so you can compare my first version(titled Render 1) with the new version (titled Render 2).

Self-criticism: Well, this time the murkiness of the water was higher than I wanted it to be and the interaction of sunlight made it kinda difficult to see the underwater elements as clearly as needed(you can see them if you look carefully).

Working on: 1. Floating Particles. This image has a few of them but they are not enough. So the next post will have a few more of those.

2. Shadows. This one is to give the pic a bit more Environment around it. You will know it when you see it! ;).


btw: JoJo1975, looking forward to your post after your vacation.

until the next post...

Shankar
08-14-2006, 11:18 AM
Hello Friends,

Thanks for your valuable Comments. Especially to Kevin,Christian Rambow,Sridhar, Bob Shariat,Håkan Andersson,Jean Christophe Boujon and for all. I reduced the density of particles and reduced the size of the bottle.

Here is my work in Progress. I welcome your comments
Thanks
-Shankar

http://static.flickr.com/61/214943596_c65bdcc588_o.jpg

giriprasad73
08-15-2006, 07:10 AM
JCBug, kevb3d and Sridhar Thanks for your valuable Comments. I have done some updates. Please comment.


http://img223.imageshack.us/img223/7808/wip3qn4.jpg (http://imageshack.us/)



@ Sri: This looks Really Great!!! All the Best.



@ Shankar: Nice update, now I really like the water and even your Fish looks much better …. I really like this

ovendelon
08-16-2006, 04:25 PM
hi all
for long time i wanted to join the lighting challanges, but of course i have not much free time, but here's a quick pic (maya and a lot of PS), maybe only for the olympic principle that the "entry is more important", i hope next time i'll do better
http://cgfarm.com/ovendelon/tri_de/oldPhoto.jpg

ChrRambow
08-18-2006, 10:53 AM
@Shankar: great improvement! I love the cloudy and voluminous feeling of the water.

@ sri: Wonderful lighting. The Bubbles in the foreground are cool.

@ giriprasad73: Great color choice and lighting. Its diffrent but it fits wonderful.

@ovendelon: i like it ... but missing the disortion of the water surface.

IestynRoberts
08-18-2006, 12:37 PM
Some seriously awsome work here everybody. I really really want to try these challenges but unfortunatley time really isnt on my side. Someday I'm just gonna get to it i think. Im on hollidays now for 2 weeks, and im definatly gonna try and get something done.
Again - good job everyone!

-Iest

proteek
08-21-2006, 02:52 PM
Hi every body. I have tried some rendering as well.
Waiting for your C&C ------

http://devproteek.com/under_water.jpg

kitsune_e
08-21-2006, 04:37 PM
Okay, I'll add to the collection. This is my first shot at doing one of these and I had a huge number of problems:)
I used Blender, so I didn't have many fancy things to help it look fancy. The water surface gave me the most problems, and I still don't like the way it looks. Faking the caustics was also a problem, though it turned out okay in the end. I would have liked to take more time on the textures/materials, but the next lighting challenge was coming up!

http://kitsu.petesdomain.com/images/challenges/latest.jpg

I didn't really have any plan in mind when I started this. I took some time looking for the best composition, and took advantage of a nice accident at one point, but otherwise this is just a random light setup. I may come back to this scene later and try to add some kind of purposeful mood to it...

giriprasad73: it's looking very nice, the only things that jump out at me are the un-textured fish and bucket.

Shankar: Great 'atmospheric' perspective, really makes it feel like an underwater shot. The motes may be a little over done though. Also the little green plants look to much like they are stuck on the image, if they were extending out from the grass under the dock they would feel more connected to the scene.

Sri: If this were a real competition I would have voted for you. Everything looks great, the only thing bugging me is that the land is shown in the distance, but nothing was done with it. I can't think of any way to further minimize it off the top of my head though. Maybe try to add some plant life in Photoshop?

Shankar
08-22-2006, 10:42 AM
Hello Friends,
Thanks for your valuable comments. Another update of my work . Looking forward for your valuable comments.
Thanks
-Shankar

http://static.flickr.com/61/221901577_fd2239a2f8_o.jpg

BarberofCivil
08-23-2006, 05:27 PM
Jeremy, I see the gallery up and I guess I missed the cut again...

sri
08-24-2006, 09:03 PM
here's my breakdown as I promised,

http://img452.imageshack.us/img452/8702/sridharunderwaterbreakdowngr6.th.jpg (http://img452.imageshack.us/my.php?image=sridharunderwaterbreakdowngr6.jpg)

I used Image based lighting in Mental Ray for Maya for the Foreground pass using the clouds HDR generated through Terragen, I finally composited all the pass in Combustion and did some touch up's in Photoshop, Simple :thumbsup:

shr1k
08-25-2006, 02:35 AM
Thanks thats nice
I like your render so much I am trying to copy it with Blender ;)
I will post what I have soon. I am rendering as I type.
I have tried some waterline renders before and had bad results I think I got it figured out this time. You render and this nice scene inspired me to try again.
EDIT:
This is WIP I can see a mistake I made already. I didnt include the water mesh in the volume shadow pass. Now when I compose the passes the water is obscured by the volume shadow. I will fix it. Here is a pic. So far I am only working below the water and on the underside of the water surface. The textures are far from done.
http://img181.imageshack.us/img181/234/dockhalopng1wi9.png

jeremybirn
08-27-2006, 05:58 PM
sri - Thanks for the breakdown!

shr1k - Good start, I guess somehow you have to make the underwater "atmosphere" look more different from the air atmosphere. You can copy more of the grass to spread it out more if you want to use that wide shot, too.

-jeremy

Shankar
08-29-2006, 06:42 AM
Hello Friends,
Thanks fro your comments. Here I post my final Image. Its small correction in Caustic layer.

Thanks
-Shankar

http://static.flickr.com/84/227981037_5d378f9cdb_o.jpg

giriprasad73
09-01-2006, 07:17 PM
Thanks everyone for their comments Iam posting my final image ...


http://img232.imageshack.us/img232/9083/wip4sf7.jpg (http://imageshack.us/)

fbompani
01-21-2007, 04:56 PM
my image
Fabio

jeremybirn
01-21-2007, 06:01 PM
fbompani - Welcome! Good start! The image looks almost "upside down" in the sense that the water surface looks like we are in the air and the water is on the other side of the surface. The boat especially looks that way. See if you can get more of an impression that we are under water, and I'll see you in the old challenges marathon thread!

-jeremy

jeremybirn
01-21-2007, 06:02 PM
This thread is being archived. If you scroll down to the Challenge #5 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.

See you there,

-jeremy