--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Louis Dina" <lbdina@c...> wrote: > > Tom, > > Photoshop rounds all L* values to integers and I don't know of any > easy, painless way around that. Since matte papers have L* values > that usually go from the mid teens for shadows to 96-98 for > highlights, and glossy papers go from single digits in shadows to 96- > 98 in the highlights, you should be okay using integers. Dividing > the overall dynamic range by 21 still gives you about 4 L* units > difference from step to step depending on the paper you are > profiling. You will still get a pretty darn good linearization. > Spectros and densitometers can give you finer precision, but you may > not see all that much of a difference as long as your scanner is > reading raw data that hasn't been adjusted or converted during > scanning. (Auto features should be disabled when scanning). > > Give it a try and see how it comes out. > > Lou Thanks Lou. I'm pretty sure I have a raw scan so I'll just proceed and see what it looks like. Thanks again, your posts are always very informative. Tom
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Re: Linearizing a QTR Curve
2005-02-21 by Tom Husband
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