Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 551)

General Precautions on Camera Connect Communication
from Smartphones
Caution
If the Wi-Fi connection is terminated while recording a movie with remote shooting,
the following will occur.
• If the Live View shooting/Movie shooting switch is set to < >, movie
recording will continue.
• If the Live View shooting/Movie shooting switch is set to < >, movie
recording will stop.
With a Wi-Fi connection to a smartphone established, certain functions are
unavailable.
In remote shooting, the AF speed may become slower.
Depending on the communication status, image display or shutter release timing
may be delayed.
When saving images to a smartphone, you cannot take a picture even if you press
the camera's shutter button. Also, the camera screen may turn off.
Note
With a Wi-Fi connection established, disabling the smartphone's power saving
function is recommended.
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