I’m following the Pixar-style eye tutorial on the Noob to Pro wiki. It calls for an eye setup where an iris is positioned underneath a completely transparent cornea.
I’ve tried this before, and have always ended up discarding the cornea, because it somehow prevents the iris from catching the light - that is, with a cornea there, the iris is dull and unhighlighted, but with the cornea removed (and no other changes made) the iris is colourful and has a strong specular.
I’ve fiddled with the settings, especially the Ray Transp settings (mainly SpecTra) and the Ztransp button, and nothing seems to make a difference.
How can I get light going through the cornea and onto the iris?