Canon EOS-1D X Mark III Af Setting Manualbook page 48

[
]
1-point
AF
Photo
It is possible to focus Precisely on the eye using
[Spot AF].
Hints & Tips
Modes other than [Spot AF] are
recommended when shooting fast
moving subjects.
As [Spot AF] only focuses on one very small area, it is
not really suited to capturing fast moving subjects
when set to AI Servo AF or Servo AF and may take
longer to focus than other AF area selection modes.
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