>
> The best solution would be do remove the Gamma correction, and stick
> to a flat 1.0 from the PNG file to the final display.

This would be fine for 48 bit images but not for 24 bit. Also for example
Photoshop 4, 5 and 6 are unable to read 48 bit pngs generated by pov. For
a year I have tried to find an image editor that can read in pov generated
48 bit pngs and do something with it. I have found none. I have asked in
several newsgroups about this and they didn't know either.

For 24 bit image files the optimal coding is the perceptually uniform 
2.2 gamma corrected. If a linear coded 24 bit image is gamma corrected
for display visible banding results in low intensity image areas.


_____________
Kari Kivisalo

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