These images relate to a gamma discussion over at
http://news.povray.org/povray.general/thread/%3Cweb.439a1b692d1f46002a1c213f0%40news.povray.org%3E/

Please post any comments there.

The images were rendered with different assumed gamma settings...1.0 vs.
2.0.  My own computer system is set up with 2.0 gamma.

I replaced the cube in my original scene with a sphere.

The gray-band backdrop, made from equally-stepped gray values, is
"self-illuminating"....finish {ambient 1 diffuse 0}.  The sphere is lit
from a single white point-light source placed far away, and has finish
{ambient 0 diffuse 1}. The sphere and light source are inside a lightgroup,
so the background is unaffected by the light.

Which image looks more realistic?

Ken

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