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Author Message   Aphototaker Tinkerer Username: Aphototaker Post Number: 95 Registered: 12-2009 Rating: N/A Votes: 0 Posted on Monday, March 01, 2010 - 10:59 am:    Just got a used A-1. I checked its meter and it appears to be off by around 2.5 stops. An EOS 1N, in partial metering mode, shows that with ISO speed 100, t=1/1000, f=6.3 is required. The A-1, however, wants f=2.8 for the same scene and settins. So, the meter is thinking the scene is too dark. I have the manual for the A-1 and I am reading this. Before I jump in to try to fix this, I wanted some advice from camera repair gurus here. Any tricks to watch out for while taking the top off? Any other causes of the meter mis-adjustment other than having to tweak its potentiometers? Thanks.