Archived posting to the Leica Users Group, 2002/03/20

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Subject: Re: [Leica] Photographing x-ray film - how to?
From: Herbert & Lee Kanner <kanner@acm.org>
Date: Wed, 20 Mar 2002 18:39:04 -0800

From: "tm" <leicar8@earthlink.net>
Subject: [Leica] Photographing x-ray film - how to?
Message-ID: <000701c1d04b$bf00a660$a643f9d8@earthlink.net>
References:

Meter the brightest and darkest portions of the xray transparency just as
if you were taking reflected readings off of a contrasty subject.  If the
range is greater than the dynamic range of the slide film (unlikely for BW
slide film) then expose for the end of the range that has the most detail.
I would guess that would be the dark areas.  Then, to be sure of your
results, bracket at least one stop in each direction.

Herb

Original message-----------------------------

This Saturday I will be photographing various x-ray sheets for a client on
Agfa Scala 200 b&w slide film with my Leica R8 and appropriate lenses. The
x-ray sheets will be lit via a standard x-ray viewbox. Since the light will
be emitted from behind the film, incident readings are impossible. Thus,
having to use reflected readings, I must be assured of perfect exposures and
am not certain how. Can anyone herein provide suggestions as to obtaining
correct metering? Thanks in advance!

Terry

- -- 
Herbert Kanner
kanner@acm.org
650-326-8204

Do not meddle in the affairs of cats,
for they are subtle and will pee
on your computer!
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