Specular
determines how much reflection you see on a nonmetallic surface, on
a scale of 0 to 1. The default is set to 1. All
surfaces have specularity to some degree. There are no surfaces
that are completely diffuse. In most cases, do not adjust the
Specular parameter, even for
appearances such as cardboard, cloth, or concrete. If you are
modeling mostly diffuse materials, use the
Roughness parameter instead.
|