Round dots get square at 50% grayscale while converting to bitmap screening

New Here ,
Feb 24, 2021 Feb 24, 2021

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I have a grayscale image of 5x5 cm at 2540 dpi. I convert it to bitmap through Image > Mode > Bitmap. First I choose the settings Output 2540 lpi and Halftone Screen... In the second window I use the settings 90 lpi, 7.5 degrees and Round shape. In the resulting file I notice that around the 50% dots are getting square instead of round. How to change this to fully round dots?

Schermafbeelding 2021-02-24 om 09.22.24.png

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Adobe Community Professional ,
Feb 24, 2021 Feb 24, 2021

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If you don’t like that halftone you could »pre-separate« via

Filter > Pixelate > Color Halftone 

or a Hard Mix-Pattern Layer. 

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Adobe Community Professional ,
Feb 24, 2021 Feb 24, 2021

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You can't expect too much as Photoshop is not a RIP or Workflow software.

 

Perhaps more than you want to know:

 

http://the-print-guide.blogspot.com/2009/02/am-screening-halftone-dot-shapes.html

 

Look for Euclidean dot (a.k.a. Transforming Round Dot): Round/Square/Round.

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