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2. Setting the 550EX as a Slave Unit
Set the wireless selector to on
the 550EX to be used as a slave unit. A
550EX set in this way is called a “slave
unit.”
• The slave unit’s flash head zoom setting is set
automatically to .
53
You can change the slave unit’s flash head zoom setting manually with the
button.
05. F073-E (51~) 02.4.1 2:12 PM Page 53