Archived posting to the Leica Users Group, 2002/03/20
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X-ray films can be very contrasty (and very grainy!). They're made
to be seen in a lightbox and not to be printed or photographed. You'll
lose your shadows if you keep your highlights. It's difficult to know
beforehand what the contrast will be, depends on the region imaged and
the radiologist's taste in exposure and contrast. Take a macro lens to
read small areas with the R8's spotmeter. Maybe you will need to give a
controlled fog second exposure (without x-rays on the lightbox, place
the lightbox on zone II or III; you should really test beforehand) to
raise the shadows.
Good luck,
Dr. Amilcar de Oliveira, DDS
Professor of Dental Radiology
UNESA School of Dentistry
Rio de Janeiro
tm wrote:
>
> 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
>
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