Datacolor User to User Support Group.

>>Then, another problem appeared. I tried to build a new profile and 
import that Photoshop curve into the PFP settings prior profile 
generation. Although the new curve seemed to have been merged into the 
profile, it was done partially only, as the black point remained the 
same. In fact, an inspection gave me the conclusion that the profile 
does not operate on any pixel in range of (0,0,0)~(10,10,10). Is there 
any solution to that? Any other profile editor would give what I desire?

Its not the profile editor at fault; any profile editor can only alter 
values that the printer/driver will allow to be altered. If this 
printer/driver configuration does not allow the deepest shadows to be 
lightened by a Photoshop curve in a PFP profile, then they simply can't 
be controlled from an RGB profile. Sorry to sound unsympathetic about 
your stock of paper you wish to salvage by profiling, but I would make 
this observation:

Trying to beat a bad printer/ink/paper combination into submission 
though profiling is not a very good choice; finding a printer/ink/paper 
combination that performs well is a much better way to achieve good 
results. Every so often I run up against someone just determined to 
make some rather poor combination work by profiling it (almost always 
to save money: on a low cost paper, on third party inks, or on an older 
or low end printer). Inevitably they say they can get improvements, but 
they still aren't satisified. They need to have some perspective about 
this process: it isn't magic, it can make bad combinations better, and 
good combinations excellent; but it can't necessarily make bad 
combinations excellent.

C. David Tobie
Product Technology Manager
ColorVision, Inc.
CDTobie@...
www.colorvision.com
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