Canon 550EX Camera Accessories User Manual


 
Setting the Master/Slave Channel
Press the < > or < > button to
set the same channel No. (1, 2, 3,
or 4) as the master unit’s.
Press the < > button.
The icon and channel No. will be
displayed.
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5
6
If the master unit and slave unit(s) are not set to the same channel No., the master unit
will be unable to trigger the slave unit’s flash. Make sure the channel No. is the same.
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