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Hey, I'm trying to render sound waves. The idea is to make it look like the atmospheric distortion of an explosions shock wave http://www.youtube.com/watch?v=IlS6535H ... re=related

Currently all my attempts all look like some kind of glass bubble, because I just can't get rid of the specular reflections. Any ideas?

My first attempt:



The key to get rid of reflections is black ref 0 and 90.

If you want more refractive effect rise the Nd a bit.