Canon PowerShot G9 - Manual (Page 154)

Advanced Shooting Functions 152
See Functions Available in Each Shooting Mode (p. 270).
The camera automatically changes the shutter speed or aperture value
when the flash fires to avoid overexposing and blowing out the
highlights in the scene. In
and shooting modes, ensure that
the flash adjustment setting is configured to [Auto] in advance (p. 148).
You can also set in [Flash Control] in the menu.
Adjusting Exposure for Built-in Flash
Shooting (Safety FE)
Shooting Mode
1
Display the Flash Settings
screen.
1. Hold the button down for more
than one second.
2
Make settings.
1. Use the or button to select
[Safety FE] and use the or
button to select [On] or [Off].
2. Press the button.
You can also set in [Flash Control] in the menu.