[softwarelist] Halftone scanning

A halftone b/w picture that I am trying to scan (DPlngScan 1.24) ends 
up with a mottled appearance.  I can clear this from the lighter sky 
part but not the main image.  If it is relevant, the picture was 
published in a journal in 1939.

ISTR that this was covered here some time ago.  Is there a fix?

-- 
Dave
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