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Was wondering if anyone knows where there is a collection of .ior files? I found several materials that had .ior files attached but I am interested in just the .ior files.

Also, how much of a render hit do they cause btw.

SHoutzager

You can find a lot on the MXM site. Just search for ior. And yes, they take longer to render. (Full dispersion).

http://www.maxwellrender.com/forum/view ... t=ior+list

Thanks to Max the mat master.