03-12-2014 07:00 PM
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.
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03-13-2014 12:20 PM
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.