Canon EOS-1D X Mark III Advanced User's Manual page 605

Transferring Images Individually
Automatic transfer after each shot
Transferring the current image
Specifying sizes or types of images to transfer
Automatic transfer after each shot
Each image can be immediately transferred to the FTP server automatically after your shot.
You can continue shooting still photos as usual while images are being transferred.
Before shooting, make sure a card is in the camera. If you shoot without recording
images, they cannot be transferred.
Automatic transfer of movies during recording is not supported. After recording, transfer
movies as described in
Before Transfer.
1.
Select [
2.
Select [Connection option settings].
Transferring Multiple Images at Once
: Network settings].
605
or Adding a Caption