Am 25.07.2012 04:41, schrieb Chaanakya:

> I was told in this thread
>
(http://news.povray.org/povray.unix/thread/<web.500560817fd5a6c37f523b7e0@news.povray.org>/)
> that I should be fine using
>
> pigment { transmit 1 }
> finish { reflection { 1 fresnel on } conserve_energy }
> interior { ior -1.5 }

There was never a mention of negative ior :-P

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