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Three Amateur Problems - Scanning a Mirror

 
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Frank Haber
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PostPosted: Wed Apr 25, 2007 9:02 pm    Post subject: Three Amateur Problems - Scanning a Mirror Reply with quote
I scan infrequently, and the Umax 1200s and 2000 (yechh) are usually kept in
the closet. I'm pretty decent with the usual document or snapshot scan, but
some "edge cases" always stump me.

Here's the first, and perhaps easiest. Is there any releable way to
flatbed-scan black text or line-art on silver/gold mirror stock? I just get
black. I usually give up and take a snapshot with a digital camera, building
a little "silverware tent" out of tissue paper and manually fiddling the
angles until I can see something. Of course, depth of field means something
is always out of focus. Hints?
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Chuck Tribolet
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PostPosted: Thu Apr 26, 2007 1:47 am    Post subject: Re: Three Amateur Problems - Scanning a Mirror Reply with quote
A better solution than your tent may be to put a polarizing filter on the camera, and
polarizing filters (@ 90 deg) on the light sources. This is old hat in copy photos.
Play with the angle of the polarizers.

Edmund Scientific has some relatively cheap polarizing film for the lights.


"Frank Haber" <frhaber@N0SPMrcn.com> wrote in message news:mdydnctfyOM55rLbnZ2dnUVZ_riknZ2d@rcn.net...
Quote:
I scan infrequently, and the Umax 1200s and 2000 (yechh) are usually kept in the closet. I'm pretty decent with the usual document
or snapshot scan, but some "edge cases" always stump me.

Here's the first, and perhaps easiest. Is there any releable way to flatbed-scan black text or line-art on silver/gold mirror
stock? I just get black. I usually give up and take a snapshot with a digital camera, building a little "silverware tent" out of
tissue paper and manually fiddling the angles until I can see something. Of course, depth of field means something is always out
of focus. Hints?
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