Canon EOS R5 C User Manual page 692

AE lock meter. mode after focus
For each metering mode, you can specify whether to lock the exposure (AE lock) once
subjects are in focus with One-Shot AF. The exposure will be locked while you keep
pressing the shutter button halfway. Select metering modes for AE lock and add a
checkmark [ ]. Select [OK] to register the setting.
Restrict shooting modes
1.
Select [
2.
Select [Enable].
3.
Press the <
: Restrict shooting modes].
> button.
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