> I'm not sure, it is possible the magnitude affects the weighting of the
> normals when they are interpolated across the triangle. Try normalizing
> the normal vectors you specify.

I don't know about the weighting, but the surface-vectors should
be one-unit in size. POV doesn't normalize them internally, and in
my experience, using other than unit-sized vector lead to strange
looking surfaces...

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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