Canon PowerShot G6 User Manual page 188

Using an Externally Mounted Flash (Sold
Separately)
You can make your flash photography even clearer and more
natural appearing with the use of a separately sold externally
mounted flash.
The camera's auto exposure function will operate with a Canon
Speedlite 220EX, 420EX, 550EX, 580EX, a Macro Ring Lite MR-
14EX or a Macro Twin Lite MT-'24EX (p. 182). (Except with the M
mode or when [Flash Adjust] is set to [Manual].) Other flashes may
fire manually or not fire at all.
Please check the manual for your flash.
* Certain functions noted in the manuals for the Canon Speedlite 220EX,
420EX, 550EX, 580EX, the Macro Ring Lite MR-14EX and Macro Twin Lite
MT-24EX cannot be performed when mounted on this camera. Please read
this guide before using one of these flashes on the camera.
Turn the external flash on and turn the mode lever to
o
(Shooting).
Attach the
hot shoe.
to the camera's
Turn the mode dial to a position other than
~
or
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180