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When a lightbeam hits your skin it basicaly does two things. Some of it reflect and some of it scatter beneath the surface. Have you ever tried to hold your hand in front of a light? It's glowing red, because some of the light passes through it. Ears are pretty thin compared to a hand, and have a lot of blood flowing through them, therefore you'll be able to see the effect if you take a light and put it behind someones ear. It becomes translucent, with a red glow, especially at the thinnest parts. To spare your surroundings for the light test, look at the ear that I've rendered. Do you see the light passing through?
There are many ways to simulate that. One of the buzz words in 3D is called Sub Surface Scattering. It does exactly that. Scatters light under the surface. In poser it's called Fastscatter, and it's not true Sub Surface Scattering, but it does the job, and as the name implies it's fast :)
submitted: 5 years and 3721 days ago