Quote - I did some investigation. changing the refract index to 3 from the default 1.5 on exnem's glas mat didnt change anything. it's probably vary dependant on the mesh.

You should have more carefully read what I said in the crystal ball thread. I quote myself:

Quote - For a sphere we can get the fisheye using IOR of 3, which compensates for the incorrect implementation in Poser. (Note this is only for a sphere - it does not generalize to other shapes.)

Not only is it probably very dependent on the mesh, it is absolutely not going to work on any other mesh.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)