Canon EOS-1D X Mark III Advanced User's Manual page 608

4.
Select an image.
Specifying sizes or types of images to transfer
You can specify which images to transfer when recording images of different sizes to the
CFexpress cards, or when shooting RAW+JPEG or RAW+HEIF images.
1.
Access the [FTP transfer settings] screen.
2.
Select [Transfer type/size].
On the camera, press the <
Select an image to transfer, then press <
You can add a voice memo to the current image before transfer. For
details, see Recording Voice
Movies cannot be transferred this way. Selecting a movie and pressing
< > will display the movie playback panel.
Follow steps 1–3 in
> button.
Memos.
Automatic transfer after each
608
> to transfer the image.
shot.