What is Back Button Focus all about?

Started Mar 25, 2014 | Discussions thread
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Olga Johnson
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Re: What is Back Button Focus all about?
In reply to BobT, Mar 27, 2014

In addition to other reasons folks have given you, back button focus allows me to use my thumb and keeps my index finger useful for the shutter alone.  I have a tremor in my hands which sometimes results in an inadvertent refocus of a scene.  That never happens when I can use my thumb for the focus.  I find it especially useful when shooting in Servo mode.

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