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Sergey Ilyin
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 08, 2006 - 05:26 am: | 
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Hello! I found an interesting discussion in the Archives https://kyp.hauslendale.com/classics/forum/messages/674/5420.html , but I post my reply in that archived topic.
Sorry if I violate any rules, but can I repeat my question once again here?
I have the A-1, also with metering problems. All shots are underexposed on about 2EV (hopefully, this still can be compensated with Exposure Compensation Lever).
I think this is not 'The White Crystals Problem' -- this crystals must prevent the light to go to SBC and lead to overexposed shots. Is there any other explanations of my problem or it is just mis-regulation of lightmeter electronics?
Thank you in advance, Sergey Ilyin |
Glenn Middleton
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 08, 2006 - 07:58 pm: |
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It may be worth remembering that the A1 metering system can be misled by large expanses of brightish sky or similar large areas of reflected brightness. I mention this because underexposure of foreground/shadow areas of around 2EV can be typical, unless you make a conscious effort to separately meter the foreground or other important areas.
Get yourself an 18% grey card and an exposure meter of known accuracy. Using either artificial light or a clear, bright midday sky, check the camera metering system. You may find all is OK, but on the other-hand the metering system may need adjustment.
If the meter is out and the error is constant I would compensate using the exposure compensation facility or by altering ASA of film.
As for the 'White Deposit'; I have only come across this once. The A1 that exhibits the problem is in very bad condition shutter wise but the meter remains 100% accurate. As nobody else has mentioned the problem, I have not investigated what the substance is - especially as from what I have seen, it does not cause a problem. |
Sergey Ilyin
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 10, 2006 - 01:08 am: |
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Of course, I check the camera with a card of constant brightness (in fact, due to lack of 18% gray card, it was the wall of my room). I compare meterings with my EOS 33 and my Sverdlovsk-4 (soviet lightmeter). Problem really exists and exists with all of my lenses 
As far as I can see the metering error is constant in wide range of brightnesses. So I think I try 'to live with it' and compensate this error with ASA setting or exposure compensation. All other functions of camera works fine and cosmetic conditions are perfect -- I am afraid that I occasionally break something else while adjusting the meter.
Thank you for reply. |
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