On Wed, Aug 19, 2009 at 4:54 PM, Piers Hemy<piers@xxxxxxxx> wrote:
> Well, Lee's estimable website is missing one detail. The code on the camera
> back tells you only the date of manufacture of the back itself. The back
> (and the baseplate carrying the serial number) is freely interchangeable
> between all single-digit OM bodies, so it would be entirely possible for an
> OM-3Ti to have a back indicating manufacture in 1973 - that would have to be
> a Wyoming-plant prototype!
.... which will take lousy pictures, as the back doesn't 'really' fit the body.
The film pressure plate of the non-MD OM-1 is somewhat smaller than
the later ones. The outside measures of the back are identical, so it
*seems* to fit just right!
Accomodating the smaller plate the non-MD body requires 4 instead of 2
of the chrome film alignment pilars in the back of the camera.
Besides, the camera back has its connectors for the plate with a
smaller spacing that all later models.
In other words, one can 'maufacture' an early-1970's OM-3Ti by
slapping an non-MD OM1 back on it, but it will never take good
pictures as the film pressure plate doesn't really fit the camera
body. :)
Cheers,
Bart
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