Canon EOS-1D X Mark III Advanced User's Manual page 629

Direct Transfer
With the camera connected to EOS Utility and the main EOS Utility window displayed, you
can use the camera to transfer images to computer.
Caution
Image transfer via FTP in progress is paused while the Live View shooting/movie
shooting switch is set to <
Selecting images to transfer
1.
Select [
2.
Select [Image sel./transfer].
>. To resume image transfer, set it to <
: Image transfer].
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