Blured "in focus"

Started Feb 28, 2013 | Discussions thread
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Ak pinxit
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Blured "in focus"
Feb 28, 2013

Situation is this : halfway of casual daytime city shooting , accidentally I checked preview on camera screen (on move I usually look only at histogram) and noticed that F8 image is "out of focus" blured (not "shake" blur) , shutter speed varies at ~1\2000 (midday sun) , so no reason to suspect "shaky hands".

I did more shoots , F4.5 and F8 , every time refocused and every time focus locked fast as it always does but images came tiny bit blurish , and not like locked object was out of focus and other plan was (Micro Adj. error - checked it too) - the focus locked was blured and the rest blured more.

After switching camera ON-OFF few times and shooting on different settings the solution was in reattaching the lens and like magic all came back to it's normal crisp focus.

Anybody else saw this and know how avoid it in future ?

7D with 1.4f 50mm

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