Canon EOS Rebel T6s EF-S 18-135mm IS STM Lens Kit Instruction Manual - Page 210

Selecting the Connection Destination Register the target camera to connect to via a wireless LAN. The camera can be connected to only one camera at a time. 1 Select [Wi-Fi function].  Under the [51] tab, set [Wi-Fi/NFC] to [Enable], then select [Wi-Fi function]. 2 Select [z].  Select [z] (Transfer imgs between cameras), then press . 3 Start the connection on the target camera.  When the screen on the left is displayed on the camera, start the connection on the target camera as well. For the operation procedure, refer to the instruction manual of the target camera.  When a connection is established, the settings are saved and an image on the card is displayed. W-36