> http://wiki.povray.org/content/Reference:Camera
>
> If I got it right from the code (tracepixel.cpp), the fisheye of
> povray is wikipedia orthographic : r = f.sin(theta).
> (in the code of povray, the computation is done the opposite way: you
> start with r (named rad), compute theta (named phi) and use that phi
> as the angle of the ray from the focal axis.
>

Thanks for confirming that POVRay's fisheye is in wiki orthographic. I was
wondering what projection method was beeing used. Thanks!

Andi

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