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     áòèé÷ :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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Re: filmscanners: Pattern with Minolta Scan Multi



I looked at your sample in Photoshop to try to see it more clearly, but
it is too small to dissect very much.

The defect appears to be Newton Rings, caused when a very smooth
surface, like glossy film base, contacts another smooth surface, like
glass.  It is a common problem, and the answers to fixing it include
creating a larger air space between the surfaces, using special
anti-newton ring glass, which has small texture etched into it, or using
special powders to allow the film to ride on top of the powder grains,
creating the needed space.

Art

Robert Meier wrote:

 > I have just rented a Minolta Scan Multi. Unfortunately, with all my
 > scans I get a very strong pattern. It looks like short vertical
 > streaks. Well, maybe it is best if you have a look at the attached
 > file. It is a part (some out-of-focus bushes on the left and some
 > in-focus skin on the right) from a Fuji NPH 400 negative film. The only
 > standard settings I have changed are 6x6, Color Negative, 1128dpi.
 > My first thought was that this pattern could be caused by the two glass
 > plates where the film is sandwiched between. Does anybody have any
 > better explanation and even better a solution for that problem?
 >
 > Thanks,
 >
 > Robert
 >







 




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