Setting The Metering Timer - Canon EOS R Advanced User's Manual

Setting the Metering Timer N
You can set how long the metering timer runs (which determines the
duration of exposure display/AE lock) after it is triggered by an action
such as pressing the shutter button halfway.
1
Select [ z 3: Metering timer].
2
Set a time option.
Select an option, then press < 0 >.
z
119