7D Back button focus?

Started Dec 27, 2012 | Questions thread
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Laoren New Member • Posts: 1
Re: 7D Back button focus?

I found all the discussions very helpful. Now I am going to try the BBF for my canon 7d. There is still one thing that is not clear to me after reading all the messages on tis subject.

After I move back the focus function to the back button AF-ON, as I push this button, I will get the subject focused and metered.  Then when I press the shutter, at half-way position, the camera is going to start the metering again.  so my question is "How do I stop shutter-half pressing from metering?" or "how do I lock the exposure when I do the BBF?".


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