5d iii not on me now, but i have my af back button set. do i need to hold the af back button to keep the IS engaged or does half pressing the shutter engage IS? would like to focus, let go of AF but have is engaged with the half shutter press
john_galt Senior Member 576 posts Likes: 2 Joined Mar 2011 More info | Jun 06, 2012 11:43 | #1 5d iii not on me now, but i have my af back button set. do i need to hold the af back button to keep the IS engaged or does half pressing the shutter engage IS? would like to focus, let go of AF but have is engaged with the half shutter press Gear: 5d iii, 17-40mm l, 24-70mm ii, 35mm 1.4 l, 50mm 1.4, 85mm 1.8, 135mm l, 70-200mm ii l, 600ex-rt
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InterMurph Senior Member 253 posts Joined Nov 2011 Location: Gloucester, Massachusetts More info | Jun 06, 2012 13:57 | #2 Are you asking, "Does enabling back-button focus affect image-stabilization (IS) in any way?"
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Jun 06, 2012 15:19 | #3 On My 5DIII, I have the custom function set so the shutter does metering only, and the back AF button does focus and meter. Pressing either button starts the IS on a lens so equipped. Gear List
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