Canon EOS R5 C User Manual page 286

One-Shot AF for Still Subjects
This AF operation is 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.
The focus remains locked while you hold down the shutter button halfway, allowing you
to recompose the image before taking the picture.
For details on the continuous shooting speed for continuous shooting, see
Drive Mode.
Note
If [ : Beep] is set to [Disable], the beeper will not sound when focus is achieved.
See Lens electronic MF
focusing.
when using a lens that supports electronic manual
286
Selecting the