Reference Manual

654
Flash Compensation
In general, choose positive values for brighter lighting,
negative values to ensure that the subject is not too brightly
lit.
At values other than ±0.0, a
Y
icon will appear in the
viewfinder and top control panel.
Flash compensation can be viewed in the top control panel
and viewfinder by pressing the
W
(
M
) button.
Normal flash output can be restored by setting flash
compensation to ±0.0. Flash compensation is not reset when
the camera is turned off.
−0.3 EV