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8th of April 2012 (Sun)
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#1 |
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Junior Member
Join Date: Jul 2010
Location: Surrey/Sussex borders. UK
Posts: 9
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7D Auto-focus sound?
Over the past year I have been suspicious that something in the 7D auto-focus might be disturbing insects when I photograph them with Canon zoom lenses. Sometimes it has been when the camera gains focus and other times only when I commit to taking a shot. Last week on 10 consecutive occasions a moth flew off as I took the picture, as soon as I switched to manual focus I got a shot. Not all insects are disturbed and I haver never experienced this when taking voucher photos with a macro lens set to AF
I know that AF is meant to work on pixels within the image but it's as if the focusing is emitting ultrasound. Anyone experienced this or got any ideas? |
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