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Opticallimits > Forums > Just Talk > canon ef 40 f2.8 STM -> weird manual focus issues

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canon ef 40 f2.8 STM -> weird manual focus issues
Klaus Offline
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#2
05-13-2013, 11:04 AM
I'd say that this is not unusual. AF lenses have some 'play' in the focus group. Sometimes more, sometimes less. 

The focus group has to have low friction due to the AF motor. This is sometimes a side effect.

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canon ef 40 f2.8 STM -> weird manual focus issues - by chris_muc - 05-13-2013, 10:45 AM
canon ef 40 f2.8 STM -> weird manual focus issues - by Klaus - 05-13-2013, 11:04 AM

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