If we can't increase more than ior 8.000 ("fake" mirror) using OR then we use ior 1.000, diffuse 0.000 (recommended) and specular 0.95~0.99. - my settings are best for true mirrors in real life.manalokos wrote:Specular should be allways 1, because tangent rays will allways tend to be 100% reflected.
I use IOR 8 for mirrors, although the reflective surface is usually behind a sheet of glass that also has absortion.
So in reallity the mirror will reflect considering the metal's index of refraction (that is not correctly calculated in octane using the standard shaders), inside a medium of glass that has natural absortion depending on its composition and thickness.
Why would this matter regarding making a good image?
