At 13:05 02/09/99 -0400, you wrote:
>It sounds to me as if these folks are talking even more through their
>hats than before. The internal dimensions of essentially every SLR --
>in fact every 35mm camera -- I've ever seen are identical. On one side
>there's a cavity the size of a film catridge, on the other side there's
>a takeup reel with enough space around it to hold the exposed film. In
>the middle there is some fraction of a millimeter ahead of the film
>plate and behind the shutter curtains. End of story.
>
>The only possible way the those dimensions can vary interestingly is
>if N&Co have more space between curtains and film, or more travel
>(without taking a permanent set, one hopes) in the back plate. But
>if either of those is important, I cringe to think about whether the
>sensor will actually be at the focal plane. Another good idea appearing
>to tank.
>
>Paul Wallich pw@xxxxxxxxx
>
Surely the issue is the distance from the cassette chamber to the centre of
the picture area. For example, this distance is much smaller in an XA than
in an OM, and I doubt there is a standard among SLRs. It's irrelevant for
film, but for a device with a sensor in a fixed positon relative to the
film chamber it would be.
Regards
Richard
Richard Ross
Hemel Hempstead, England
rhdesign@xxxxxxxxxxxxx
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