> Distortion is dependent on angle, not aspect ratio. Saying that the image
> will be probably 2:1 doesn't tell us anything in this regard.

I think the main problem is the type of projection, not the angle itself.
What POV-Ray does is place a rectangle in front of the camera and shoot the
rays through that, and thus we get the distortion. I'm no expert on this,
and have spent only little thought on it, but if the area where the rays are
shot were concave instead of flat, and every point's normal would point
towards the camera, I think that the horizontal lines should stay
horizontal, and the vertical lines vertical, with no distortion whatsoever.
Unless the camera isn't aligned properly, that is...

If I'm mistaken, I hope someone will jump in and explain where and why...
:-)

Regards,
Tim

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>

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