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Digital BW, The Print

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Re: [Digital BW] Unusual BW scanning phenomena. Viewpoints solicited...

2002-12-18 by Stephen Petegorsky

Jerry - I'm not sure if this is the cause of your problem, but:  Many times
a photo or a piece of artwork with a glossy surface will have a great deal
of light scattered over the surface when it is put in a copy situation or
directly on the bed of a scanner.  What you may have to do is to shoot the
original (using either film or a digital camera) with a polarizing filter
over the lens AND the lights that you use.  This allows you to rotate the
filter on the camera until you can see that all glare on the surface of the
print being copied is cancelled out.  You can then scan the film or work
with the digital file.

When you use such a set-up you will need to take a light reading through the
lens and filter, if you're using a camera with a through-the-lens meter, or
else use a hand-held meter and add two f/stops worth of light to compensate
for what the polarizing filter on the lens cuts out.

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