Am 05.08.2017 um 23:27 schrieb Kenneth:

> SO... it seems that my use of Photoshop-- at its *typical* gamma setting of
> 2.2-- was introducing a gamma change into the POV-Ray PNG image. I have aways
> assumed 2.2 to be the correct gamma in PS, for any/all PNG images that I've
> downloaded from the 'net, and even for Photoshop-created PNG images. But it's
> NOT correct for post-processing a POV-Ray PNG render: a PS gamma of 1.0 is
> necessary (at least for both of the newsgroup's two preview sizes to show up
> correctly!) So, *something* is amiss somewhere-- either a flaw in my version of
> Photoshop, OR in how the newsgroups treat preview images.

Have you made your display gamma known to Photoshop?
(And what version are you using anyway?)

> By the way, these are my POV-Ray render settings:
> A) assumed_gamma 1.0 in the scene file
> B) Display_Gamma of 'srgb' in my .ini file
> C) File_Gamma of 'srgb' in my .ini file

Good boy. That should be exactly right... provided you have set up your
display and Windows to match sRGB gamma.

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