Hello Kristian
If you do a standard ICC-transformation with colorsync, e.g.
input->printer, the destination-profile (printer) is embedded in the
transformed file. Using the application preview for viewing the
transformed file, the profile-chain is now printer->monitor.
If you are making a transformation with a devicelink-profile, it makes
no sense to embedd the devicelink-profile, because it can´t be used for
viewing at the monitor.
If you made e.g. a devicelink-profile input-printer, you must embedd the
original printer-profile (not the devicelink) after transformation, to
compare the result with the standard ICC-transformation.
As this is a second step, the usage of devicelink-profiles makes only
sense, if you use special options (like preserve black generation),
which are not available for standard ICC-transformtions.
:-) Jan-Peter
Kristian Kratzenstein wrote:
Dear Jan-Peter,
I don't use any of this linked profile irectly to show on screen. This is
done with Quartz, and this get the device profile of the output device for
drawing. The calculation are done in memory.
Before I did use Colorsync for (Input -> Printer) and (Printer -> Input)
for proofing, that works well. Now I try to use LCMS for creating device
linked profiles out of both calculations. The drawing on screen is not
touched, the screen profile / rendering not changed.
When I use both calculations at once (needed for proofing), the Image get
real bright. when using only one (lucky, the printer profile is also rgb)
the Image got also brighter, but not that hard. It looks like there is a
gamma in every linked profile, which is added in each step.
In addition : when I use absolute colormetric, the Image become also
bright.
kind regards,
Kristian Kratzenstein
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