After viewing Thomas de Groot's "On the streets...," and his insistence that his
gamma settings were correct, I decided to revisit my monitor's gamma settings.
I created a set of 10 gamma test images to test not only gray scales, but the
RGB channels.  I'm now convinced that cross-checking the color channels yields
a better calibration than just gray scale alone.  I also came away with a
greater appreciation of just how non-linear our visual perception is.

The scene file is intended to be run in animation mode, with Final_Frame=10; a
sample command line is included with the scene file.

References:

http://news.povray.org/povray.binaries.images/thread/%3C49afd5d5@news.povray.org%3E/

http://news.povray.org/povray.general/thread/%3Cweb.4986021ec6af8354f8450bd80@news.povray.org%3E/

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Download 'gamma_disc.pov.txt' (2 KB)