Canon EOS R10 User Manual page 226

: Center-weighted average
The metering across the screen is averaged, with the center of the screen weighted
more heavily.
Caution
With (evaluative metering), holding down the shutter button halfway when
shooting with [One-Shot AF] locks the exposure value (AE lock). With
metering), (spot metering), or
exposure is set at the moment the picture is taken (without locking the exposure
value when the shutter button is pressed halfway).
With [ : AE lock meter. mode after focus] (
lock the exposure (AE lock) once subjects are in focus with One-Shot AF.
(center-weighted average metering),
), you can set whether or not to
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(partial