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Clipping at 3% and 97%, for offset printing

Community Beginner ,
Oct 24, 2022 Oct 24, 2022

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Hi --- I used to be able to clip the ends of my greyscale images, so that everything from 0-3% would print at 3% and everything from 97% to 100% would print at 97%.  (Thus avoiding the dreaded sudden white areas in the skin tones). I did this using Curves, and it seemed easy enough, and I could put that into an automated batch and do a whole bunch of them at the end of the process.

 

Well, now, with the latest Photoshop, 2022, I'm having trouble figuring out how to do this. Curves doesn't seem to work the same way. And, I'm even having trouble searching for the problem and how to fix it because I'm not sure what to even call what I'm doing or want to do. Can anyone help? Very much appreciated ...

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Actions and scripting , macOS

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Community Beginner ,
Oct 24, 2022 Oct 24, 2022

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Actually, I have figured it out. I'll post it here in case anyone else has the same problem. You have to actually *pull* from the 0 point over to the 3% point ... unless I am remembering wrong you used to be able to do this by clicking. Hence the confusion ...

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Community Expert ,
Oct 24, 2022 Oct 24, 2022

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Glad you got it fixed. And BTW, you really don't even need to do this old, very old school pre-color management edit; the output profile will map this for you and do so based on what you visually prefer when soft proofing. 

Author “Color Management for Photographers" & "Photoshop CC Color Management/pluralsight"

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Community Expert ,
Oct 25, 2022 Oct 25, 2022

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@alisonl0shi 

 

You may have been thinking of the little-used "arbitrary map" (pencil) curve feature.

 

I have some examples for flexo printing, where dot values are very critical:

 

https://www.dropbox.com/s/5e28ha300yuihwh/FlexoCurves.zip

 

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