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19. An explanation of how the D-1 creates file names and folders names.

The Nikon D-1 is capable of storing up to 889100 images before repeating a combination of filename and folder location. This is achieved by a file naming convention which runs from 0001 to 9999 and a folder naming system which runs from 100 to 999.

As the creation of filenames and folders is automatic, this note explains in detail how the images on your camera will be named.

The following assumptions are made:

  • The CF card being used is empty.
  • The D-1 is new or has been set to factory default follwing the with the two-button reset command procedure.
  • Custom setting 29 is set to "1", or, with custom setting 29:1, all images are stored on the same CF card without changing or formatting the card (it would be a card of capacity far greater than  is currently available!).

1) The first file created will have the name DSC_0001.jpg in a folder called "100NC_D1" and the number of images that can be stored on the CF card (displayed in the rear LCD) decreases by one.

2) The next image taken will be called DSC_0002.jpg and will be located in the same folder. This will continue until the number of files reaches 999 with the file DSC_0999.jpg.

  • At this point, folder 100NC_D1 will contain 999 images, numbered from DSC_0001.jpg to DSC_0999.jpg.
  • (Note that the new folder is created when the file number reaches 0999, not 9999)

3) After the file DSC_0999.jpg is named, the next file (DSC_1000.jpg) will be created in a new folder called 101NC_D1. The next 998 files will also be written into this same folder.

  • Therefore after 1998 files, there will be two folders on the camera as follows:
  • 100NC_D1 with files DSC_0001.jpg to DSC_0999.jpg
  • 101NC_D1 containing DSC_1000.jpg to DSC_1998.jpg

4) When the file name DSC_9999.jpg is reached, as the next picture is taken, a new folder will be created and this new file (which will be called DSC_0001.jpg) will be written into this newly created folder.

  • The first time that this happens, (when a file number has reached to DSC_9999 in 110NC_D1), the new folder is called 111NC_D1 and the new picture DSC_0001.jpg is created in this new folder, even though the previous folder has only reached seven frames. In fact each time that the filename count reaches 9999, the next DSC_0001.jpg file will be created in a new folder.
  • Hence, for the given example the following pattern will occur:
    • 110NC_D1: DSC_9993 - DSC_9999 / frame counter 001-007
    • 111NC_D1: DSC_0001 - DSC_0999 / frame counter 001-999

 Students of arithmetic might like to determine for themselves the cyclic relationship between the identity of the part-filled folders  the filenames as the number of images grows.

This pattern will continue until:

  • Customer setting 29:1 is turned to "0"
  • The camera is returned to factory default with the two-button reset procedure.
  • 889100 images have been taken .

Note that this numbering convention is not affected by the number of digits on the LCD displays on the rear and top of the camera. For example if a high-capacity CF card, capable of holding more than 999 images, (the limit of the display) is inserted in the camera, the total number of images that can be held on the card is not affected.

The manner in which the camera determines file names or numbers cannot be manually altered (for example to differentiate one camera from another) as the system must be compliant with the Digital Camera industry standard code called the "Design Rule for Camera Format."