Thread: Canon 100-400 f4/f5.6 IS Zoom
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Old 22-01-2008, 08:08 PM
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mh68 mh68 is offline
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Re: Canon 100-400 f4/f5.6 IS Zoom
Have you tested whether its focussing slightly in front of, or behind the target Gerry. A friend had a similar problem with a Sigma lens and it turned out to be back focussing slightly, after correction he got some very nice results with it.

Mark H
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