Canon Wireless File Transmitter WFT-E7A - Manual (Page 89)

89
Synchronizing the
Camera Time
Set the master camera time on up to 10 slave cameras, as needed.
Synchronization can be done over a wireless or wired connection. Note that
even after synchronization, there will be a slight margin of error between
master and slave camera time of ±0.05 seconds, at most.
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