That is often the case with Perceptual intent. It tries to maintain
some of the tonal separation that exists outside the gamut by scaling
the whole gamut "inward." This means the in-gamut colors have to be
desaturated a bit. With Relative Colorimetric, all of the out-of-gamut
colors are mapped onto the gamut boundary, which effectively swallows
any detail information in those colors. The in-gamut colors pretty much
stay put, so you don't get that desaturation effect.
Regards,
Mike Cummings
CHROMiX Technical Support
1-866-CHROMiX (247-6649)
cummings(a)chromix.com
On Jun 22, 2004, at 1:12 AM, Borislav Ivanov wrote:
Thanks
But while I'm using Perceptual there is a noticeable change in tone
values (the image becomes lighter on the monitor). I used to make
color and tone corrections i RGB mode only, so this lightening a
little bit scares me. In case of Relative Colorimetric there is no
change.
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