Archived posting to the Leica Users Group, 2001/03/20
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At 6:54 PM -0800 3/20/01, Frank Filippone wrote:
>What does X-ray fog look like?
>
>Frank Filippone
>red735i@earthlink.net
If it has gone through a poorly adjusted security X-ray, you tend to
see shadows of adjacent dense object on the film, repeating and in
decreasing density as you get to the center of the roll. I've seen
one instance of this in the late 70's in a roll of ASA 400 film that
was in a Rollei 35; you could clearly see the shadow of the strap
attachment on the film in a repeating pattern.
If the film was not in a camera or near a dense object, you would get
an increase in overall density and background fog in a repeating
pattern, due to the rays being stronger on one side of the roll than
the other.
- --
* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
|[ ]| http://www.archiphoto.com