Canon EOS Rebel XTI - Manual (Page 97)

97
Handy Features
[Auto reset]: Resets the file numbering to 0001 whenever the
CF card is replaced.
Each time the CF card is replaced, the file numbering starts from
0001. This is convenient if you want to organize images according to
CF cards.
If the replacement CF card contains images recorded previously, the
file numbering of the new images might continue from the file
numbering of the existing images in the card. To start the file
numbering from 0001, the CF card must be formatted before use.
[Manual reset]: You can reset the file numbering 0001 at any
time or for 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 convenient when you want to use different
folders for the images taken yesterday and the ones taken today.
After the manual reset, the file numbering returns to continuous or
auto reset.
0051
CF card -1
0001
CF card -2
File numbering after replacing the CF card
File numbering is reset
If folder No. 999 is created, [Folder number full] will appear on the LCD
monitor. If that folder contains images reaching file number 9999, shooting will
not be possible even if the CF card still has storage capacity. The LCD monitor
will display a message to replace the CF card. Be sure to replace the CF card.
For both JPEG and RAW images, the file name will start with “IMG_”. The file
name extension will be “.JPG” for JPEG images and “.CR2” for RAW images.