Canon EOS R Advanced User's Manual page 263

One-Shot AF for Still Subjects (ONE SHOT)
Suited for still subjects. When you press the shutter button
halfway, the camera will focus only once.
When focus is achieved, the AF point will turn green and the beeper will sound.
z
The focus remains locked while you hold down the shutter button
z
halfway, allowing you to recompose the image before taking the picture.
For details on the continuous shooting speed for continuous
z
shooting, see p.144.
If [ 5 3: Beep] is set to [Disable], the beeper will not sound when focus is
achieved.
Servo AF for Moving Subjects (SERVO)
This AF operation is suited for moving subjects. While you hold
down the shutter button halfway, the camera will keep focusing on
the subject continuously.
When focus is achieved, the AF point will turn blue.
z
The exposure is set at the moment the picture is taken.
z
For details on the continuous shooting speed for continuous
z
shooting, see p.144.
Depending on the lens used, the distance to the subject and the
o
subject's speed, the camera may not be able to achieve correct focus.
Zooming during continuous shooting may throw off the focus. Zoom first,
o
then recompose and shoot.
When [Servo AF] is set and [Multi Shot Noise Reduction] is set
o
(p.105), [ z 5: High ISO speed NR] will automatically switch to
[Standard].
With Servo AF, the beeper will not sound even when focus is achieved.
o
In [ A ] mode, by default, the camera automatically switches to Servo
o
AF in response to subject movement. If you normally prefer to shoot with
One-Shot AF, set [ 2 1: A Auto servo] to [Disable].
Selecting the AF Operation
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