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Re: [OM] OM-2S and reciprocity failure

Subject: Re: [OM] OM-2S and reciprocity failure
From: Richard Ross <richard@xxxxxxxxxxxxxxx>
Date: Wed, 01 Dec 1999 12:23:14 +0000
John H wrote:
>I am also wondering if, even though the auto exposure doesn't agree with the
>reading exactly according to home tests, how accurate are these bods when
>checked on a camera tester?

Good point.  I still haven't had time to check my other 2SP, but if the one
I noticed this reciprocity effect on is "faulty" I'm prepared to live with
it - I think it's actually an advantage when working in b/w.  John - the
effect was only at shutter speeds longer than 1 second, which of course
don't appear on the meter scale.  At f3.5, the indicated *and actual*
exposures were approx 0.5 sec.  I then closed the lens down 4 stops to f16,
so I expected a shutter speed four stops longer than 0.5 sec i.e. 8
seconds.  But what I got was approx 24.  If you set up your tester for a
light level that gives you 0.5 sec at f3.5, would a correctly functioning
OM-2SP give you 8 seconds at f16?  That would be the expected result unless
reciprocity compensation were built in, and that's really what I'm
wondering :-) 

Best
Richard



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