Canon EOS Rebel T1i EOS REBEL T1i/EOS 500D Instruction Manual - Page 133

Handy Features [Auto reset]: Resets the file numbering to 0001 whenever the card is replaced. Each time you replace the card, the file numbering restarts from 0001. This is convenient if you want to organize images according to cards. If the replacement 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 restart the file numbering from 0001, you should use a newly-formatted card. File numbering after replacing the card Card-1 Card-2 0051 0001 File numbering is reset [Manual reset]: To reset the file numbering to 0001 manually 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 convenient when you want to use different folders for the images taken yesterday and the ones taken today, for example. After the manual reset, the file numbering returns to continuous or auto reset. If the file number in folder No. 999 reaches 9999, shooting will not be possible even if the card still has storage capacity. The LCD monitor will display a message to replace the card. Replace 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" for movies. 133