Canon POWERSHOT G10 User Manual page 269

Speedlite 430EX II and 580EX II
• The maximum flash synchro shutter speed is 1/250 second.
• The flash will automatically adjust its output when [Flash
Mode] is set to [Auto].
• When [Flash Mode] is set to [Auto] the flash exposure
compensation can be adjusted. When [Flash Mode] is set to
[Manual], the flash output can be adjusted
• In
output of an externally mounted flash can be adjusted in the
flash output adjustment screen
the flash output from the flash (the flash setting overrides the
camera setting when both are set). For the optimum aperture
values and ISO speeds for the distance to the subject, refer to
the guide number listed in the flash's user guide.
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.
• In
even if the flash unit is set to E-TTL automatic flash exposure
compensation. [E-TTL] will display on the flash, but the flash
will fire manually.
Other Canon Flashes (other than Speedlite EX series,
Macro Ring Lite MR-14EX and Macro Twin Lite MT-24EX)
• Since other flashes fire at full strength, set the shutter speed
and aperture accordingly.
4
Press the shutter button halfway.
• The flash is charged when its pilot lamp lights up.
5
Press the shutter button all the way to shoot
the image.
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mode or when [Flash Mode] is set to [Manual], the
mode, you can set the flash output with the camera
(p. 113).
(p. 113). You can also adjust
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