At 02:07 AM 1/30/2003 +0100, you wrote:
FWIW, I'd never expect two light meters to agree. Even if you get them to line up exactly at ONE quantity of light, there's no guarantee they'd stay aligned at another. The best you can hope for is that each meter individually is reliable (which is NOT the same as accurate, BTW). What'd be ideal is to get all your meters reading not only the same thing at any point, but the CORRECT thing. That won't happen whether you line up three camera bodies side-by-side or a mix of camera & handheld meters or (as we used to do when I had a staff of 10 shooters working for me) if you lay a batch of handhelds side-by-side.I got back the trannies that I used to compare the Minolta light meter with the EOS 1v. While this wasn't the most scientific test I have done it was carefully shot on a tripod ensuring consistent lighting conditions. I actually shot five separate outdoor situations which ranged from full shade - full sun - backlit, including a gray card, and an indoor portrait shoot to test flash metering. Some of the results were a little surprising.
Then, in many cases you have to take processing into account. I used to shoot a lot of b&w and never souped my own film. Every time I switched labs I gave them a handful of test stuff until I knew what they were doing.
-- -
regards,
Henry Posner
Director of Sales and Training
B&H Photo-Video, and Pro-Audio Inc.
http://www.bhphotovideo.com
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