Render this: SSS

Ecuadorian

Sure, I posted some settings here:
http://twilightrender.com/phpBB3/viewtopic.php?f=16&t=356&p=2350

Actually, a lot of materials present Sub-Surface Scattering. Just put a strong light behind a slab of marble, a plastic toy, or a china plate. The human body has SSS, too; wax candles, paper, even wood has it. It's just that most of the time it's not that noticeable under normal lighting.

I made two 30-minute renders with Twilight, one with Easy 09 (aka MLT or Metropolis Light Transport) and another with Easy 10 (aka Bidirectional MLT). These popular render methods are also available in Indigo and other unbiased render plug-ins. Spot the differences between MLT and Bi-MLT:

MLT:

Bi-directional MLT:

Here's the file so you can check the settings used:
sss cat.zip

Pete, I believe SSS looks much more spectacular on a dragon statue or something similar. Do you have one around?

solo

@unknownuser said:

Pete, I believe SSS looks more spectacular on a dragon statue or something similar. Do you have one around?

I actually do, in fact I have a few. But the problem is they are only one material, and the SSS effect is only dynamic with a light behind technique, this way you can have two materials giving more options for SSS and not only the light trick. I wanted to have the option of having another material behind a SSS one, like veins under skin.

xrok1

hey guys, that would make an awesome preview object for Twilight's material editor!

nice job guys but i think that last one is the cats meow!

Ecuadorian

I think Remus (Indigo), Brodie (Maxwell) and Pete (Vue) have shown the best SSS examples here.

boofredlay

Twilight

Ecuadorian

Another try with Twilight's Bi-directional MLT, this time using the plexiglass template for the outer shell.

EDIT: A stacked version of all three previous Twilight Renders (MLT, Bi-MLT and Bi-MLT with Plexiglass) with some post-pro in the cat's eyes.

tallbridgeguy

cool stuff

tallbridgeguy

still cool!

tallbridgeguy

Pretty cool Dermot! I thought you were sitting this one out.....(its pretty fun stuff)

tallbridgeguy

I am using Kerkythea and I downloaded a number of their great material libraries. Since you have twlight I'm sure you have access to tons of materials on their forum.

s

tallbridgeguy

I looked on the kerkythea forum and found some more info on SSS. (actually today was the first time I ever heard of sss.)

s

dacad

Ecuadorian

If i'm not mistaken the BPT is better suited for interiors, other way there's no much diference between btp and MLT. You should try the two in a interior room with lighs coming from the windows with real glass just with sun to see the big diferences.

tallbridgeguy

Is this kinda sss?

thanks!

EarthMover

Torus Knot emitter, inside of ice, inside of honey. FryRender - 15% Isotropic Scattering with 85% Dielectric Transmittance.

EarthMover

TBG - It is to a degree, although it appears to be more of a frosted glass. With SSS you'd expect to see less light absorbed into the thicker areas (i.e. the corners of the cube) and more light absorbed into the thinner areas (those closest to the sphere). In your render you can see the light passing through the thick areas too uniformly to be a true rendition of what SSS would look like. The dark areas in your render appear to be more shadow casting than that of light block through physical density. Keep trying though...you're getting closer.