Canon Wireless Transmitter WFT-E6A - Manual (Page 46)

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Configuring EOS Utility Communication Settings
There is no need to complete pairing again if you will continue using a particular camera,
transmitter, and computer together after pairing without changing the settings.
Before your next PTP session, simply turn on the camera to which the transmitter is
attached and start the pairing software. The connection between the camera and computer
will be established automatically.
You can add the pairing software to the software launched at startup of your computer. In
EOS Utility on the [Preferences]  [Basic Settings] tab, select [ Add WFT Pairing
Software to the Startup folder].
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