Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 750)

Continuous
For continuous file numbering regardless of switching cards or
creating folders
File numbering is continuous up to 9999, even if you replace a card, create a folder, or
switch the target card (as in
→ ). This is useful when you want to save images
numbered anywhere between 0001 to 9999 on multiple cards or in multiple folders into one
folder on a computer.
Note that file numbering may continue from any existing images in cards or folders that you
switch to. If you want to use continuous file numbering, it is recommended that you use a
newly formatted card each time.
File numbering after replacing cards or switching target cards
Card A ( )
Card B ( )
(1) Next sequential file number
File numbering after creating a folder
Card A
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