Back button focusing for 5d Mark III. How do I set it up?

[Rongates]

How do I set up Back Button focusing on my new 5D Mark III.  Can't find instructions in Canon supplied manual or third-party book.

[Skirball · Accepted solution]

http://www.courtneysargent.com/for-photographers-setting-up-back-button-focus-on-the-5d-mark-iii/

[Skirball · Accepted solution]

http://www.courtneysargent.com/for-photographers-setting-up-back-button-focus-on-the-5d-mark-iii/

[Rongates]

Thank you...

[amfoto1 · Accepted solution]

It's really easy because it's mostly already set up... The AF-On button on the back of the camera already starts and stops AF.

To set up true BBF technique, you turn off the AF function at the shutter button. I believe it's Custom Function IV, 1:  Opertaion/Others.... where you make button assignments.  Navigate to the shutter button icon and press "set" to enter the options for that... change to the center one "metering start" and press "set" again. Done.

Optionally you can swap the function of the AF-On and "*" (AE Lock) buttons, using the same button assignment tool.

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Alan Myers

San Jose, Calif., USA
"Walk softly and carry a big lens."
GEAR: 5DII, 7D(x2), 50D(x3), some other cameras, various lenses & accessories
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[Rongates]

Thank you!