Canon EOS 5D MARK IV, Инструкция по эксплуатации

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f
: Selecting the AF Operation
N
102
This AF operation is suited for
moving subjects when the focusing
distance keeps changing. While you
hold down the shutter button halfway,
the camera will keep focusing on the
subject continuously.
The exposure is set at the moment the picture is taken.
When the AF area selection mode (p.109) is set to Automatic
selection AF, focus tracking will continue as long as the Area AF
frame covers the subject.
AI Focus AF switches the AF
operation from One-Shot AF to AI
Servo AF automatically if a still
subject starts moving.
After the subject is focused in One-Shot AF, if the subject starts
moving, the camera will detect the movement, change the AF
operation automatically to AI Servo AF, and start tracking the moving
subject.
AI Servo AF for Moving Subjects
AI Focus AF for Switching the AF Operation Automatically
With AI Servo AF, the beeper will not sound even when focus is achieved.
Also, the focus indicator <
o
> in the viewfinder will not light up.
When focus is achieved with AI Focus AF with the Servo operation active,
the beeper will continue beeping softly. However, the focus indicator <
o
> in
the viewfinder will not light up. Note that focus will not be locked in this case.