This test image is good for setting the brightness (black level).
http://www.pp.htv.fi/kkivisal/adjust.gif

Contrast (gain) setting depends on the ambient light level and
the optimum is when "white is white enough". When for example
the numbers in the above image start to bloom gain is too high.

The goal is to keep visible all the 255 levels of intensity in
24-bit images. Intensity change from 0% to 5% and from 95% to 100%
should be visible.

The above only deals with adjusting monitor to display full range.
Monitor gamma can be anything when designing graphics but for
published images gamma 2.2 is the best choice. So, if an image
is designed on adjusted gamma 2.6 monitor apply 2.6/2.2=1.18
correction before publishing.

This really is all one can do to when creating graphics. Make sure
your own monitor is well adjusted and adjust published graphics
for 2.2 gamma. The rest is up to the viewer but I wouldn't count on
them :(



_____________
Kari Kivisalo

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