Back button focus on 7D

Started May 10, 2012 | Discussions thread
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Back button focus on 7D
May 10, 2012

Ok, I'm ready to try BBF, but I'm confused on set up and usage.
C.FNIV Operations/Others
Metering and AF start second box down, af-on SET
Then the first box AF SET
Now, should I focus only with the back button and hold it down until I shoot?

I've tried to read the directions, but never seeing it done, I'm afraid I'm not getting it.

MY shutter botton still seems to be focusing at times also. Sorry to be so dense, but could anyone help me with the set up and how to use it. Then I go back to take another shot and the Af-on doesn't focus the next time. Maybe I'm missing a step. I'm hoping this makes some sense to someone, but you can see how confused I am. Help please

 PK62's gear list:PK62's gear list
Canon EOS 6D Canon EOS 7D Mark II Canon EF 17-40mm f/4.0L USM Canon EF 24-105mm f/4L IS USM Tamron SP 150-600mm F/5-6.3 Di VC USD +6 more
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