100mm f2 focus MA

Started Dec 31, 2013 | Discussions thread
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songeun7
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100mm f2 focus MA
Dec 31, 2013

I have problem with MA adjustment for my one week old 100mm f2 lens. Under day light -5 gives me the sharpest photo but under indoor light, +20 gives me the sharpest photo. Is my lens defective? Any advices?

Thanks,

Sean

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