IOR setting for refractive materials (fresnel)

[Micha_cg]

Hallo,

I wonder me about the refractive IOR at the fresnel function. For what is it needed? If I like to setup a refractive material, should I set the refractive IOR of the fresnel and the refraction layer?

Regards Micha

[joe_b]

IOR setting for refractive materials (fresnel)

Yes it should have the same IOR as the refraction layer if one is present. That parameter may be removed in a future SR - or at least the UI modified - because I'm not sure there is any benefit to having it there ( as was brought to my attention by Flipside ).