Canon WFT-E7 Instruction Manual page 20

Preparation
[LinkedShot]

You can perform linked shooting using multiple compatible cameras
with WFT series transmitters attached. This feature lets you link up
to 10 reciever cameras to the sender camera on which you will
release the shutter. Note that there will be a slight delay after you
release the sender camera shutter before the reciever cameras
shoot. Movie shooting is not supported.
For subsequent operations, see page 71.
[Sync time between cameras]

You can set the sender camera time on up to 10 reciever cameras.
Note that even after synchronization, there will be a margin of error
between sender and reciever camera times.
Set up multiple cameras of the same camera model with WFT-E7
series transmitters attached.
For subsequent operations, see page 85.
Connecting Using an Access Point
When connecting using an access point, connect the target device to
the access point in advance.
Transfer of Movies over Wireless LAN
Because of the large size of individual movie files, wireless LAN file
transmission takes some time. Set up an environment where each device
can achieve stable communication with the access point and the transmitter
by referring to the information on page 125.
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