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Digital BW, The Print

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Re: [Digital BW] Film scanning and scratches

2001-08-28 by Shire,Stanley

Ben:
We scan a great deal of film from 35mm to 4x5 each day. While dust will always be a problem (although I am delighted with the Ice3 on the Nikon 4k) scratches are a no-no. 
I am not familiar with your scanner I have a few points that may help:
1. Check the film carrier carefully for sharp places that may cause the scratch. A good technique is wiping a piece of panty hose over all surfaces of the carrier and scanner that come in contact with the film. If a problem exists, the panty hose will catch.
2. Are the scratches base side or emulsion side? This may isolate the cause.
3. Silly question. Is it possible that the scratches were on the film pre-scan? Look at some never-scanned film with fairly powerful loupe (like a 15x peak).

Hope this helps

Stan Shire
Associate Professor / Dept Chair
Department of Photographic Imaging
Community College of Philadelphia
Adobe Photoshop 6 A.C.E.
  ----- Original Message ----- 
  From: tynmansystems@... 
  To: DigitalBlackandWhiteThePrint@yahoogroups.com 
  Sent: Tuesday, August 28, 2001 3:32 PM
  Subject: [Digital BW] Film scanning and scratches


  I tried to find a group that is focused on film scanning, but 
  couldn't find one; hope this isn't too far off topic for this group.

  Over the past two year, I have been scanning 35mm negative film (both 
  color and B&W) using a Canon 2710 film scanner. I notice that I spend 
  a tremendous amount of time retouching film scratches on over half of 
  the images that I have scanned. These are very fine scratches on the 
  film base, that would typically not be visible in an enlargement made 
  in an enlarger, but which are very visible when scanned and enlarged 
  in Photoshop.

  My question is: is there something inherent in film scanners that 
  magnifies film scratches? I have seen the dust and scratch removal 



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