Canon EOS 80D - Manual (Page 185)

185
3 File Numbering Methods
Restarts the file numbering from 0001 each time the card is
replaced or a new folder is created.
When you replace the card or create a folder, the file numbering restarts
from 0001 for the new images saved. This is useful if you want to
organize images by cards or folders.
If the replacement card or existing folder already contains images
recorded previously, the file numbering of the new images may continue
from the file numbering of the existing images on the card or in the
folder. If you want to save images with the file numbering starting from
0001, use a newly formatted card each time.
Resets the file numbering to 0001 or to start from file number 0001
in a new folder.
When you reset the file numbering manually, a new folder is created
automatically and the file numbering of images saved to that folder
starts from 0001.
This is useful, for example, when you want to use different folders for
the images taken yesterday and the ones taken today.
Auto Reset
Manual Reset
File numbering after
replacing the card
File numbering is reset
File numbering after
creating a folder
Card-1
0051
Card-2
0001 0051
100
0001
101
Card-1
If the file number in folder 999 reaches 9999, shooting will not be possible
even if the card still has storage capacity. The LCD monitor will display a
message telling you to replace the card. Replace it with a new card.
For both JPEG and RAW images, the file name will start with “IMG_”. Movie
file names will start with “MVI_”. The extension will be “.JPG” for JPEG
images, “.CR2” for RAW images, and “.MOV” or “.MP4” for movies.