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D7100: AF focuses on background a lot?


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km6xz

St Petersburg, RU
3576 posts

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"RE: D7100: AF focuses on background a lot?"

km6xz Moderator Awarded for his in-depth knowledge in various areas, including Portraits and Urban Photography Nikonian since 22nd Jan 2009
Sat 04-May-13 12:03 AM

There are many ways for the AF to misread your intentions. Were you using AF-C Release Priority?
Had you focused on a more distant subject while still having your thumb on the AF-On button when you then selected the person in the foreground?
If the AF in AF-C, 11 point was locked on another focal plane, with the AF-On button down, and recomposed, even with AF-C, the AF would have still being holding tracking of the first subject it locked onto. If in doubt, release the AF-On button and re-acquire focus lock on the new subject.
As was mentioned above, the focusing point sensors are larger than the box outline in the VF so if a better target was on an edge of the selected focal point but at a more distant focal plane, you would get shots like what you did.
Stan
St Petersburg Russia

Visit my Nikonians gallery.

This is a hot topic  It has been locked by a team member D7100: AF focuses on background a lot? [View all] , doppler_fto , Fri 03-May-13 05:19 AM
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