sRGB & Jazz
sRGB & Jazz
- Subject: sRGB & Jazz
- From: Jack Kelly Clark <email@hidden>
- Date: Thu, 22 May 2003 08:26:33 -0700
Concerning the Assign Profile command in PS7, I observed this
interesting effect yesterday.
A local service bureau did some sample scans of a group of mounted
slides for me on their Scitex Jazz Plus. The scans were 8 bit, 20MB
each, with very little adjustment done in the scanning interface
software. I asked them to just make sure the important whites were
not blown out. Because the service bureau only had the lowest level
Scitex software for this scanner, no ICC workflow was used, and the
scans were delivered to me as untagged TIFF files (we were shopping
for a rate on bulk scanning).
During the course of evaluating the scans I discovered that, right
after opening the TIFF in Photoshop, if I use the Assign Profile
command to assign the loathsome sRGB profile to the file, there is a
dramatic, marked improvement in the overall image being displayed on
my monitor. It's similar to the dramatic change I see when sRGB is
assigned to untagged digicam images.
What's going on here? If I assign sRGB to these scans, which fixes
a lot of oversaturated colors real quick, then convert to Adobe RGB ,
then finish the editing and save, am I doing serious damage to the
file? Or, if I just assign Adobe RGB and then edit the glowing red
faces and other oversaturated colors, etc., which takes more time, am
I doing less damage than the sRGB route above. Finally, perhaps the
dumbest question of all, did Scitex create a scanner or scanning
software that scans into the sRGB space whether you want it or not?
I realize that the newer scanners for Creo are now much more
sympathetic to the ICC /RGB workflow.
Jack Clark
UC Davis
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