Canon 550 EX - Manual (Page 57)

5. Master Flash ON/OFF
The master unit’s flash firing can be enabled (ON) or disabled (OFF).
(1) ( ) : This setting enables the master unit to fire a flash.
• This setting is called “Master flash ON.”
• This setting automatically sets the master unit’s slave ID to A.
(2) ( ) : This setting (Master flash OFF) prevents the master unit
from firing a flash. It can still transmit wireless signals to
trigger the slave units.
Press the < > button and
select .
• Pressing the < > button changes
the selection in the following loop:
Press the < > or < > button to set
either or .
Press the < > button.
• or will appear.
• If master flash OFF is set, will blink.
57
1
(Off )
Even if master flash OFF is set, the master unit still transmits the wireless signal to fire
the slave units.
3
2
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