Canon SPEEDLITE 580EXII Mode D'emploi page 32

After you complete the settings, the effective
flash range will be displayed on the
Speedlite's LCD panel.
With manual external metering, you can connect the camera to the
Speedlite's PC terminal with a sync cord and place the Speedlite at a
different position from the camera.
You cannot connect a Speedlite to another Speedlite's PC terminal with
a sync cord. The second Speedlite will not fire.
Set the Speedlite to the camera's
3
aperture setting.
Press the <8> button so the
aperture setting blinks.
Turn the <9> dial to set the
aperture, then press the <8> button.
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