volumetric lighting - just playing!

[flingster]

come on guys...i'm sure you guys must have some tests for volumetric lighting....don't be so shy!

if not anybody got any ideas on using volumetric lighting to get that underwater scene looking just nice.
:wavey: :wavey:

[JIII]

gah now I gotta dig up those old water projection thingys i did.

[flingster]

cool..would love to see anything people have come up with cos its taking me so long to experiment with stuff just feel it would be quicker to see other people tests or whatever and people can then ask questions about a particular technique or if they have any tips on how they achieve stuff....so dig dig i'm interested in anything in this area really.:beer:

[JIII]

here is a little thingy I did with volumetric stuff/noise.

its got a large cube to catch the light and kinda project it. just made like a 40 second loop figuring i minght wanna make some credits or something with it someday.

[Gunter]

Just an alpha-pic as texture of a light:
Amoeba (http://www.magicray.net/uploads/pics/Amoeb07.jpg)

[H. Ikeda]

Just playing with inverse volumetric light. No particle, nor Pyro...:)
We have no such tools in space!:D

[flingster]

nice guys thats what i mean't...:thumbsup:

JIII: looks promising for some sort of credits thing. when you say cube bit what do you mean...cube with noise and then shine the light through it?

Gunter: i presume you had a light above out of view the alpha over light and this is how you get the ray effects? is this right or do you also have a water surface out of view? Also did you just use noise in the alpha...can't remember what can ya...like that underwater look....kinda wierd i did a spacey looking spikey thing like that a while ago...not gonna post it though yours looks so much more proff!

H. Ikeda: i shoulda known you'd come up with something different..nice touch...i bet it was still faster than pyro though! any chance we can see a bigger pic? i don't suppose you can give us any tips on how you got that tail part...high dust, more than one light? etc.

once again thanks that was what i was looking to see what people had been messing about with or testing things...didn't need to be finished...can just be a concept.

you've given me some great ideas...i love that volumetric lighting effect...can be used for so many things render times just kill it off in a sense....never mind i just love that atmospheric quality to it.
:cool: :cool:

[Kotayus]

here is my contribution:

Clickeh (http://www.metafex.net/imagehost/volume.jpg)

[Gunter]

hi flingster,
you are right: light is out of view, alpha over light. No watersurface. For the spot light, used noise, dust, dithering - simulating micro-particles in the water. Thanks for praise:blush:

to Kotayus,
really like it, the sharp beam with that little smoke, great:thumbsup:

[H. Ikeda]

It's really just playing and simple. Two lights, one for inverse volumetric (with noise), another within the meteor (no need?). The meteor has been made of a Sphere primitive with bhodiNUT NICKL. You can render big pictures using the file below.

invers_vol.zip(R8) (http://www.interq.or.jp/aquarius/ikeda3dr/data/cgtalk/invers_vol.zip)

Cheers,;)

[artdude12]

Just a small test.
One light.

[flingster]

Kotayus : very nice, impressive...love the effect...how'd ya do it then?

H. Ikeda: thanks for the file i'll give it a whirl. cheers :thumbsup:

artdude12 : thats wierd looking stuff...like it though...got a black and white feel about it...like the effect of backlighting.


can anybody tell me on this image how i control these hard edges...unfortunately with file size limits had to really crunch file down and looks rough anyway!:wip:

[Kotayus]

Originally posted by flingster
Kotayus : very nice, impressive...love the effect...how'd ya do it then?

Thank you!, i didnt intend for it to be impressive, lol. Um, i cheated...i used highlights...on the sphere, thats why its so intense and has a "sparkly" aspect to it. the "smoke" is a volumetric round spot with noise, and there is 3 tube lights, with slight color variations. thats about it.

[Kotayus]

another quickie...im not sure if i like it, its certainly not as dynamic as my first...but i like tube lights =)

More Clickeh (http://www.metafex.net/imagehost/volume2.jpg)

[artdude12]

another test.
two objects_one light.
It's a little dark but looks
nice in a dimly lit room.

[JIII]

ohh flingster I used the inside of a cube to project the light better.

cube with a light inside. thinking aboutit now it would probibly work better with a sphere cause there wouldnt be any seams visible like there are in my pic. look closely and you can see the edges of the cube.

its just BIG CUBE with light inside, and of course the camera is inside it too ;)

[flingster]

"can anybody tell me on this image how i control these hard edges" don't suppose anybody has any ideas on how i can get rid of those hard edges on my earlier image.....:wip:
Man this thread was so quite i'd almost given up there for a minute...so its not just me that...messes about and fiddles with settings then....:buttrock:

Kotayus: very clever now i know how its done....i totally underrated tube lights...so i'm gonna go and have a play now.

the second one you get those reflections which look cool.

artdude12: now thanks funky...bud...really like that...its got a creepy feeling to it...any more info on how ya did it...it almost looks like stuff hanging also...kinda hard to tell as it so dark.

JIII: yup i thought that might be how you did it...had ago myself the other day after you posted...and you can get some really nice looking stuff...combining noise...colours etc.

[JIII]

so koyatus you used the highlights post thing but what did your sphere look like before?

was it reflective transparent or what????

[flingster]

just found this for anybody whos interested.
underwater scene tut (in german unfortunately..don't understand..but you'll get jist of it)
volumetric lighting setup.:applause:
http://www.render-forum.de/tutor2.html

[Kotayus]

Under water tut in english: Clickeh (http://www.3dpics.de/tutorials/underwater_e.html)

And this is what it looked like prior to highlights:
http://www.metafex.net/imagehost/volumenohighlights.jpg

groovy!

[KevinA]

Here's my volumetric lighting experiment :)

[JeremyW]

Previously posted on the PostForum.

http://www.jeremyw.com/C4D_Stuff/light3.html
Sorry for the huge download: 22MB MPEG-4.
(Sorenson was just killing it)

One volumetric light, one texture tag, a small farm, and some patience.

Here's an older one. Quicker DL time:
http://www.jeremyw.com/pages/nova.html

[JIII]

ahh the genius that is jeremy W has spoken,
now if I could just figure out that proximal water simulation.....

[flingster]

Kotayus : thanks for the english link. (didn't realise highlights would make so much difference)

KevinA: experiment!!...man if that was mine i'd keep it...i keep expecting the one man sub to come around the corner...very cool.

JeremyW : i love that sort of stuff youve been doing....believe me the patience bit is just worth waiting for imho...excellent stuff...the your sema stuff in transparency etc and some of the other stuff on your website was what inpired me to do the original posting...any tips...absolutely any time...to shorten that time and wait testing curve would be very much appreciated.:wip:

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