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Autofocus - questions

Diane M Mateer

Butler, US
2 posts

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"RE: Autofocus - questions"

Diane M Mateer Registered since 11th Nov 2012
Mon 10-Dec-12 01:24 PM

>This Nikon post takes care of how the D800 and D4 (same AF
>system) work with AF-On button.
>
>http://nikonasia-en.custhelp.com/app/answers/detail/a_id/7497/~/shutter-is-released-even-if-focus-has-not-been-acquired-while-pressing-the
>
>Thom Hogan's D800 book, pg 431 says 'trap focus' no longer
>works on this camera.
>
>So ... Russ may have a point.
>
>You can also, with AF-C and AF-On, prefocus at a point all day
>long, pick up a target that moves under the focus point and
>fire - you have to push the shutter release now. But this
>works rather well. The new AF system is so fast, I prefer
>AF-C, Release priority unless I'm really doing subjects that
>are not (supposed) to move - then I may use AF-S.
>
>I'm not doing macro yet, Dan so don't know about your
>challenges.

Wow, So with Nikon's explaination, they are basically admitting that focus priority may not always work right using the AF-on button to achieve focus, lock focus, and only be in focus before allowing the shutter to fire because of "changes in specifications" in the design of the newer cameras. Isn't that nice...

A general, generic topic Autofocus - questions [View all] , Thuja Silver Member , Fri 07-Dec-12 04:24 AM
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