Canon PowerShot G7 User Guide Advanced User Manual page 147

3
Turn the shooting mode dial to the desired
mode.
Speedlite 220EX, 430EX or 580EX
The maximum flash synchro shutter speed is 1/250 second.
The flash will automatically adjust its output when [Flash
Adjust] is set to [Auto].
In mode or when [Flash Adjust] is set to [Manual], the
flash will fire with manual adjustments. Refer to the guide
number noted in the instructions manual for the flash you
are using for aperture value and ISO speed, and set the
appropriate value for the distance from the subject.
When [Flash Adjust] is set to [Manual], the flash output can
be adjusted. When [Flash Adjust] is set to [Auto] the flash
exposure compensation can be adjusted (p. 73).
In mode or when [Flash Adjust] is set to [Manual], the
output of an externally mounted flash can be adjusted in the
flash output adjustment screen (p. 73). When a Speedlite
430EX or 580EX is mounted on the camera, you can adjust
the flash output from either the flash or the camera. (The
flash setting overrides the camera setting when both are
set.) To set it from the flash, you are recommended to use
the flash's manual mode. When using Speed Light 220 EX,
adjustment can be made on the camera only. You can also
adjust the flash output even when the camera is set to the
E-TTL automatic flash exposure compensation mode by
changing the flash exposure compensation setting. To shoot
with the flash, you are recommended to set the white
balance to the
Other Canon Flashes
Since other flashes fire at full strength, set the shutter speed
and aperture accordingly. You are recommended to set the
white balance to
4
Press the shutter button halfway.
The flash is charged when its pilot lamp lights up.
(Flash) setting.
(Flash) to shoot.
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