5D Mk3 Autofocus Settings

Dazb75

Dazb75

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Name
Daz
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I've had a 5D Mk3 for about a month now, previously having owned a Mk2.

I upgraded because I photograph dogs and I wanted to take advantage of the upgraded autofocus system. I mostly shoot moving dogs and use AI servo and back-button focussing when shooting. However, I'm still not sure which of the autofocus settings to use.

I main take four types of dog photo:
  • dog running parallel (panning type shot)
  • dog running towards me
  • dog running towards me on a diagonal
  • dog walking
These are the six cases that Canon have pre-progammed:
  • Case 1: versatile multi purpose
  • Case 2: continuing to track the subject, ignoring possible obstacles
  • Case 3: instantly focus on subjects suddenly entering AF points
  • Case 4: subjects that accelerate of decelerate quicklu
  • Case 5: erratic subjects moving quickly in any direction
  • Case 6: subjects that change speed and move erratically
I use the 6 central autofocus point configured like a crosshair, and keep that positioned on the dog. Up to now I have used case 6, but I still have doubts about which one I should use.

Anyone else photograph dogs of something similar?

Thanks
 
I find that 4 and 6 work the best for me. They are quite similar to how the previous 1-series would have behave. No 1 really grabs something and would not let it go, just like a mad pitbull. I suppose that is a bliss for some sports photography, but not for me.
 
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