The following is an in-depth guide to the regular V-Ray Blend Material. In this series, we will cover the theory behind many of the features of the material. We’ll also show specific examples of settings and give you some tricks to use. While the images used are from 3ds Max, the same concepts and settings can be used for V-Ray for Maya. Currently, the SSS materials in V-Ray for C4D behave differently, so this tutorial will not be as valuable for C4D users.
The V-Ray FastSSS2 Material is designed for creating translucent materials (ones that scatter the light inside the object). Some common examples are: skin, marble, wax, milk, etc.
Compared to the “translucency” option in the regular V-Ray Material, it has a far better sub-surface scattering model (SSS). It is faster and much more advanced. For this reason, it’s preferable to use the FastSSS2 Material whenever you need to make a translucent shader.