Canon SPEEDLITE 580EX II Manual De Instrucciones página 38

Fully Automatic Wireless Flash
This method has all the Speedlites fire at the same flash output with E-
TTL II autoflash controlling the total flash output.
Set the camera-attached 580EX II
1
as the master unit.
Set the other 580EX II
2
Speedlites(s) as the wireless
slave unit(s).
Check the communication
3
channel.
If the master unit and slave unit(s) are
set to a different channel, set them all
to the same channel (p.40).
Position the camera and
4
Speedlites.
Position the Speedlites within the
range shown on the next page.
Set the master unit's flash mode
5
to <a>.
For shooting, <a> will also be
set automatically for the slave unit(s).
Check that the flash is ready.
6
When the slave unit(s) is ready to fire,
the AF-assist beam will blink at 1-sec.
intervals.
37