Nikon Z9 Mirrorless Camera - Manual (Page 433)

433 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 shooting display
and the control panel.
• Flash compensation can be viewed in the shooting display and
control panel by pressing the
c 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.
Monitor Control panel