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[OM] eliminating Newton rings from film scans

Subject: [OM] eliminating Newton rings from film scans
From: John Hudson <OM4T@xxxxxxxxxxx>
Date: Sun, 19 Jun 2011 13:27:40 -0300
I occasionally use a glass carrier to hold 35mm and 120 format film strips 
for scanning.

In at least 50% of cases Newton rings show up in the final scans. The glass 
plates are kept clean and moisture free as best as I can manage and likewise 
the film strips.

Are these rings just an accident of nature waiting to happen or can anyone 
suggest a routine or procedure to help eliminate their occurance?

Using Photoshop to have them go away is very time consuming and does not 
eliminate the chance of leaving behind tell tale signs of their original 
existence.

jh



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