> Unfortunately, POV clips the colors before it combines them, rather than
> afterward...to antialiasing, rgb 20 is the same as rgb 1.

You mean fortunately. POV-Ray does this in the mathematically correct way.
Antialiasing is a method of making an image with finite resolution appear as
though it has infinite resolution. If POV-Ray did not do it this way, then
extremly bright objects which are *large* (such as a sphere with color rgb
20) would look very aliased.

Clipping after anti-aliasing would cause anti-aliasing to be useful only in
situations where colors were not oversaturated. Just because the alternative
would produce a specific effect in a specific situation doesn't mean that
it's desirable.

 - Slime
 [ http://www.slimeland.com/ ]

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