>The metering system uses two CdS sensors to estimate
>the shutter speed, but also has two silicon blue
>sensors that read the light reflected off the
>first shutter blind, or off the film when long
>exposures are used. During manual exposure, only the
>CdS sensors are used.
I've been wondering about this. I understand that the
first shutter curtain has a black and white checker
pattern which is used to center weight the meter's
sensitivity. The OM-2 had two different versions of
this, one more emphasized then the other. However,
what happens when the exposure is significantly longer
then 1/60? The checker pattern will have very little
effect on the meters. Are longer exposures less
center weighted because of this?
Curiously,
Marten
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