Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 444)

5.
Press the < > button.
Images are now displayed on the television, with nothing displayed on
the camera screen.
The images will automatically be displayed at the optimum resolution
matching the connected television.
Caution
Adjust movie sound volume with the television. The sound volume cannot be
adjusted with the camera.
Before connecting or disconnecting the cable between the camera and television,
turn off the camera and television.
Depending on the television, part of the image displayed may be cut off.
Do not connect any other device's output to the camera's <
>
terminal. Doing so may cause a malfunction.
Certain televisions may not display the images due to incompatibility.
It may take some time before images are displayed. To avoid delay, set [ :
HDMI
resolution ] to [ 1080p ] ( ).
Touch-screen operations are not supported while the camera is connected to a
television.
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