Ive schrieb:
> I really do not see why not simply respecting the W3C/PNG recommendation 
> as every contemporary browser (meanwhile even including IE) and every 
> not totally brain-dead image viewer does.

Um - misunderstanding here:

The default gamma for input files would be intended to kick in *only* 
for files where no gamma information is to be had (or where 
sophisticated gamma / color profile handling hasn't been implemented yet).

For PNG files, the gAMA chunk information would still take precedence. 
(And as for sRGB chunks, if I'm asked the only legitimate reason to 
continue ignoring them is lack of the manpower needed to implement the 
proper handling; the same goes for full-fledged color profiles, by the way.)

To override the decoding gamma for files with explicit gamma information 
or a fixed gamma, the user would have to explicitly specify a decoding 
gamma on a per-file basis.

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