Canon PowerShot SX40 HS User Manual page 181

Speedlite 580EX II/430EX II/320EX/270EX II/
270EX
These flashes enable you to shoot scenes brightly and allow for a wider range
of flash photography to suit your purposes.
Using an Externally Mounted Flash (Sold Separately)
Attach the flash to the hot shoe.
Turn the flash on, then turn the
camera on.
A red h appears on the screen (or the
viewfinder).
When the flash is charged, its pilot lamp
will light.
Set the camera to G, M, B or D
mode.
Set the white balance to h (p. 80).
Configure the externally mounted
flash.
Press the n button to choose [Flash
Control] in the 4 tab, then press the m
button.
The options set on the flash will appear.
Press the op buttons or turn the 5 dial
to choose an item, then press the qr
buttons to adjust the setting.
The available settings differ depending on
the shooting mode and attached flash
(p. 183).
181