70-200 F4 IS noise

Started Aug 25, 2010 | Discussions thread
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geteng08
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70-200 F4 IS noise
Aug 25, 2010

Apologies if this is a noob question but I just got my new 70-200 F4 IS and I noticed that the IS produces a continuous humming noise when I half-press the shutter.

Is it meant to work this way? I had expected the humming to stop once the image stabilises.

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