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.

1 Set the camera-attached 580EX II as the master unit.

2 Set the other 580EX II Speedlites(s) as the wireless slave unit(s).

3 Check the communication channel.

If the master unit and slave unit(s) are set to a different channel, set them all to the same channel (p.40).

4Position the camera and Speedlites.

Position the Speedlites within the range shown on the next page.

5Set the master unit’s flash mode to <a>.

For shooting, <a> will also be set automatically for the slave unit(s).

6 Check that the flash is ready. When the slave unit(s) is ready to fire, the AF-assist beam will blink at 1-sec. intervals.

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