Gleb Alexandrov has a look at using and abusing the material roughness setting in Blender, to better understand physically based materials, and how it can change the way we actually think about materials in general.
[pullquote]In the world of Physically Based Rendering, roughness of the material is a VERY important concept to understand[/pullquote]If you have ever look dat the roughness getting on a shader as just another property, this is a great watch for you. Gleb breaks down what roughness is doing, and how it can help you create better and more realistic materials for your renders.
