Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 122)

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With the [ 2 2 ] to [ 2 5 ] menu tabs, you
can set the AF functions to suit your
shooting style or subject.
You can set the AF operation characteristics and shutter-release timing
for the first shot with AI Servo AF.
: Equal priority
Equal priority is given to focusing and
shutter release.
: Release priority
Pressing the shutter button takes the
picture immediately even if focus has
not been achieved. Useful when you
want to give priority to capturing the
image rather than achieving focus.
: Focus priority
Pressing the shutter button does not take the picture until focus is
achieved. Useful when you want to achieve focus before capturing
the image.
3
Customizing AF Functions
2 2: AI Servo
AI Servo 1st image priority