Canon WFT-R10A Wireless File Transmitter for EOS R5 C & R5 Mirrorless Camera - Manual (Page 109)

Positioning the Cameras
(A) Sender Camera
(B) Receiver Camera
Position the receiver cameras in clear view of the sender camera, without objects
between them.
Receiver cameras can be positioned up to approx. 50 m / XX ft. from the sender
camera. However, the distance supported for linked shooting may be shorter depending
on the wireless communication conditions, which are affected by how the cameras are
positioned, the usage environment, and weather conditions.
Pressing the shutter button halfway on the sender camera will also put the receiver
cameras in a state corresponding to when their shutter buttons are pressed halfway.
Similarly, fully pressing the shutter button on the sender camera will also put the
receiver cameras in a state corresponding to when their shutter buttons are fully
pressed.
There will be a slight delay in the shutter release timing between the sender and
receiver cameras. (Simultaneous shooting is not possible.)
Caution
Do not use multiple flash units. Although slight, there is a difference in the shutter
release timing, which may cause out-of-sync flash firing and inadequate exposure.
Note
During linked shooting, when you press the AE lock or depth-of-field preview
button, the camera adjusts the focus and meters as if you had pressed the shutter
button halfway.
Once you have established a connection between the sender camera and receiver
cameras, the settings are retained even after you replace the batteries.
If you will no longer use a receiver camera in linked shooting, go to [
Connection
settings ] and set [ LinkedShot ] to [ Disconnect ].
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