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Old Feb 10, 2005, 1:40 PM   #9
hedwards
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Join Date: Jul 2004
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Sorry, wouldn't be fair for me to say for sure. I usually manual focus and I don't have a USM lens. It really isn't
an issue for me most of my shots are of still subjects.

It does seem markedly slower than my 50mm f/1.8s focus. But it is a prime, so I would expect for that and the lower aperature to play a
big factor.
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