Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 221)

Checking and Deleting Multiple Exposures During
Shooting
To view the multiple-exposure image so far, check exposure, and see how the images are
layered, you can press the <
> button before you finish shooting your specified number
of exposures (when [ On:Func/Ctrl ] is set, but not with [ On:ContShtng ]).
Pressing the < > button will display the operations possible during multiple-exposure
shooting.
Operation Description
Return to previous
screen
The screen before you pressed the < > button will reappear.
Undo last image
Deletes the last image you shot (enabling you to replace it by shooting again).
The number of remaining exposures will increase by 1.
Save and exit
With [ Save source imgs : All images ], saves all single exposures and the
multiple-exposure image created so far and exits multiple-exposure shooting.
With [
Save source imgs : Result only ], saves only the multiple-exposure
image created so far and exits multiple-exposure shooting.
Exit without saving Exits the multiple-exposure shooting without saving the image.
Caution
During multiple-exposure shooting, you can only play back multiple-exposure
images.
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