Quote - Sorry, but this is just one of the things that makes me crazy about the material room and why I don't have a clue what's going on in it. Not like other 3D programs at all that are relatively straightforward. IOR in those IS the real IOR (Luxrender, Cycles and Kerkythea just to name a couple).

Yeah, to get good results from Firefly seems to require a whole lot more skill than many other renderers because you first have to learn its various quirks and shortcomings and then the various additional steps needed to overcome them or to 'fake' the things it just can't do.

I'm often amazed by the skill and dedication of the various material room gurus who post here, and I can't help wondering why they haven't migrated to a more capable renderer, to either halve their effort or double the quality of their results.