> Ken, this is similar to what I do, except that I scan in 16 bit grayscale,
> and I use curves adjustments instead of messing with image gamma (not sure
> you even can do that in photoshop, never tried). My testing years ago
> showed no image quality difference between RGB scans and grayscale scans
> so long as you scanned in high-bit (16 bit for grey, 48 bit for RGB) mode.
I'm revisiting the 16-bit grayscale scanning. I'll let you guys know...
The image gamma seems to really be the thing that corrects the
unhappiness I have with most people's scans. You are doing curves
adjustment, which might be simulating what the gamma adjustment is
doing. In my old copy of Photoshop Elements (3.0), I go into Levels
and adjust the mid point far to the right. This simulates the gamma a
little, but it is a different thing.
--
Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
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