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[OM] Scanning problems

Subject: [OM] Scanning problems
From: Andrew Gullen <andrew.gullen@xxxxxxxxxxxx>
Date: Fri, 10 Jan 2003 22:24:48 -0500
> Date: Wed, 8 Jan 2003 15:27:53 -0600
> From: "gries" <gries@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Subject: [OM] SLIDE FILM COMPARISONS
> 
> HERE'S AN INTERESTING TABLE FOR SLIDE FILMS.  SCROLL DOWN A BIT...
> 
> http://www.creekin.net/films.htm

Following this link I found another really interesting article on grain
aliasing problems in scanning at

  http://www.photoscientia.co.uk/Grain.htm

This bears on the recent discussion of variable results in scanning
negatives. The signal analysis discussion is also relevant to scanning B&W
and slide film, and to digital cameras.

BTW, a really good example of a moiré (a similar aliasing artifact) can be
found in the gray pages of the OM-4T manual scan at

  http://www.grue.net/olydocs/om4t.pdf

See page 59 especially. I don't mean this critically of course; I deeply
appreciate provision of these scans. Now I have an OM-1 manual as well!

Andrew 



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