Canon CDI-E154-010 - Manual (Page 91)

89
Shooting
Resetting the File Number
The images you shoot are automatically assigned file numbers. You can
select how the file number is assigned.
Setting the File No. Reset to [Off] is useful for avoiding file name
duplication when images are downloaded to a computer.
On
The file number is reset to the start (100-0001) each time a new SD
card is inserted. New images recorded on SD cards with existing files
are assigned the next available number.
Off
The file number of the last image to be shot is memorized so that
images recorded to a new SD card start from the next number.
1 In the (Set up) menu, select .
See Selecting Menus and Settings (p. 45).
2 Use the or button to select
[On] or [Off] and press the MENU
button.
The display will return to the shooting
screen.