Canon EOS R50 Mirrorless Camera (White) - Manual (Page 287)

Disable ( )
The image is displayed at standard brightness, so it is easy to see. Even if you set
exposure compensation, the image is displayed at the standard brightness.
Caution
Notes on [Exposure+DOF]
Display may flicker at some shutter speeds.
With EF lenses, this setting may increase the shutter-release time lag.
The depth of field shown is only a guideline. For more precise indication of the
depth of field, press the button assigned to depth-of-field preview (
).
[ Exposure+DOF ] is not available with some lenses.
[ ] blinks if either exposure or depth of field cannot be simulated, or if neither
can be simulated.
[
] is dimmed if either exposure or depth of field simulation stops, or if both
simulations stop.
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