75 1.8 whirling noise

Started Dec 21, 2012 | Discussions thread
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Bmat
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75 1.8 whirling noise
Dec 21, 2012

Just got the 75.18, and the IQ seems great.  But does anyone notice a whirling noise--a little louder and different that I would expect when focusing from from long range to short range or vice versa.  I'm using an OMD, to the extent that matters.  Thanks in advance.

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