Canon EOS REBEL T8i Advanced User's Manual page 684

C.Fn 4: Safety shift
You can shoot with the shutter speed and aperture value automatically adjusted to enable
standard exposure if standard exposure would not be available under your specified shutter
speed or aperture value in <
0:Disable
1:Enable
C.Fn 5: Exposure comp. auto cancel
0:Enable
When you set the power switch to <
canceled.
1:Disable
The exposure compensation setting will not be canceled even if you set the power
switch to <
Note
The exposure compensation setting is not canceled after auto power off, even
when set to [0:Enable].
> or <
>.
> mode.
>, the exposure compensation setting will be
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