polarizers

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can I use a polarizer along with electronic flash and what is the compensation for the flash or ambient? The camera is a canon a2 and I know I have to use circular polarizer. Thank you.

-- Drew Simicich (nyjetzfan@aol.com), April 29, 2001

Answers

Depends on where the exposure/flash metering is done. If it's all done by the camera, that's no problem because the camera is metering exactly what the film is going to get (through the lens with filter). If the flash does its own thing, I don't know. I presume you'd have to set flash exposure compensation, I think polarizers take 1-2 stops of light. Best way to find out the exact value is to meter with and without filter and see what the difference is.

-- Ulrich Beinert (analemma@gmx.de), April 30, 2001.

Circular polarizers take 2 stops of light. Of course one usually does TTL flash with EOS so in that case you wouldn't have to do compensation.

-- Steven Fisher (srf@srf.com), April 30, 2001.

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