Ich bin curious "how" you "apply" the profile from to your scanned images.
In my very humble experience, "Assigning" the scanner profile to the raw RGB
image, in Photoshop, never shifts the pixels right or left in the histogram.
It is like when assigning a profile to any RGB or CMYK image in Photoshop:
the appearance of farbe changes on screen but not the pixel values
themselves
Are you sure you are proceeding along this way?
MfG / Roger
-----Original Message-----
From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
On Behalf Of Hermann-Josef Röser
Sent: Sunday, March 12, 2017 12:14 PM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] ICC-profile shift histograms
Hello,
currently I am experimenting with various IT8-targets for my scanner and
different settings in Argyll to find an optimum. One problem is common to
many of these tests: Applying the ICC-profile shifts the histograms of the
images either to the dark or to the bright end. A well-exposed image then
becomes saturated at the dark resp. bright end.
I would very much appreciate advice, which parameters in Argyll can be used
to influence these shifts, i.e. to more or less preserve the range of pixel
values from in the original scan.
Best wishes
Hermann-Josef
