Canon EOS R50 Mirrorless Camera (White) - Manual (Page 160)

exp. comp.
Set the flash exposure compensation if the brightness of the subject does not come out as
desired (so you want to adjust the flash output) in flash photography.
1.
Select [ exp. comp.].
2.
Set the compensation amount.
To brighten flash exposure, set the compensation amount toward
[
Brighter ] (positive compensation), or to darken it, set toward [ Darker ]
(negative compensation).
After taking the picture, cancel the flash exposure compensation by
setting it back to 0.
Caution
Setting [ : Auto Lighting Optimizer ] ( ) to an option other than [ Disable ] may
still cause images to look bright even if you set negative flash exposure
compensation for darker exposure.
If flash exposure compensation is set with a Speedlite (sold separately,
), you
cannot set the flash exposure compensation with the camera (Quick Control or
external flash function setting). Note that the Speedlite's setting overrides the
camera's if both are set at the same time.
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