At 18:32 7/9/02, Moose wrote:
The only hypothesis that reasonably fits Oly's specs that say center
weighted and the curtain patterns is that center weighting in these
cameras takes place elsewhere in the metering system, possibly in the
(sensitivity by) angle of view of the metering cells (a very easy change).
If this is the case, there would be no variation in center weighting with
shutter speed. This problem could even be why the design was changed early
in the production of the pre 'n' OM-2 cameras, as a result of field
experience of the effects of loss of center weighting at slow shutter speeds.
While the horizontal center-weight pattern may be OK for many horizontal
photographs, it wouldn't necessarily be desirable for vertical ones. Yet
another possible motive for changing the pattern. Only the design team
would be able to fully answer the question about the curtain pattern change.
-- John
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