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Re: [OM] HELP: Horribly scratched slides and negatives!

Subject: Re: [OM] HELP: Horribly scratched slides and negatives!
From: Paul Wallich <pw@xxxxxxxxx>
Date: Thu, 18 Apr 2002 20:07:02 -0400
At 7:40 PM -0400 4/18/02, --p.j. wrote:


Take a look at this photo folks!
http://www.lunarpages.com/johnsonpa/scratches6.jpg
for an even larger version go here:
http://www.lunarpages.com/johnsonpa/scratches5.jpg
(yes, the scan stinks, but that is another matter :-)

My 4T is scratching my slides to pieces.
The scratches are white on the slide and there are all over the slides.
It seems like each roll has a seperate set of scratches that are pretty
uniform throughout the roll.  Sometimes some get added and a few go away
during the roll.  In any case, what you can see in the photo are only the
ones that are visible after scanning and resizing.  The slides are covered
in scratches that don't show up in the photo.  Some are fractions of a
milimeter apart as well. There doesn't seem to be a top-to-bottom preference
either.
Anybody have any suggestions?

Have you been shooting with any other bodies and getting the film developed at the same place?

Can't tell from a scan, but are the scratches on the emulsion or the base side? If they're white on a slide in person and black in the scans that would imply the base side because usually scratches remove one or more layers if in the emulsion side. If

With this level of ugliness whatever is rubbing against the film should be
obvious when looking inside the camera, either at the pressure plate or the
path between the film rails. You might have oodles of grit in there, or, if
the film has been mishandled, grit in the light trap at the edge of the canister. The different scratches on different rolls would imply some kind
of small mobile sharps, and lots of them.

BUT unless the inside of your camera has half a handfull of fine sand in it
I would bet on something that happened either before you loaded the film in
the camera or after you gave it to the processor.

paul

PS the OM series is pretty good at excluding environmental contaminants. My first OM-1 spent a day with me walking halfway into the grand canyon and back
out, dust halfway in on the lens flange and no further.


--
Paul Wallich                                            pw@xxxxxxxxx

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