Why do I have to dial in AF micro adjustment now when previously I didn't need to?

Started Apr 26, 2013 | Discussions thread
JLim22
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Re: Why do I have to dial in AF micro adjustment now when previously I didn't need to?
In reply to Learnphotography, Apr 26, 2013

I recently noticed this also. When I purchased the 6D back in January, my 85 1.8 needed -18 in micro adjustment. Last week I noticed few shots were soft, so I did the test again and now it's perfect at -12. I used dot tune method to do micro adjustment.

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Sony RX100 II Canon EOS 6D Canon EF 24mm f/1.4L II USM Canon EF 85mm f/1.8 USM Sigma 15mm F2.8 EX DG Diagonal Fisheye +2 more
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