About Folders - Canon EOS 1D Instruction Manual

Selecting the Media, Folder, and Recording Method

About Folders

As with "100EOS1D" for example, the folder name starts with three digits
(folder number) followed by five characters. A folder can contain up to 9999
images (file No. 0001 - 9999). When a folder becomes full, a new folder with a
higher one-up folder number is created automatically. Also, if manual reset
(p.80) is executed, a new folder will be created automatically. Folders
numbered from 100 to 999 can be created.
Creating Folders with a Personal Computer
With the memory card open on the screen, create a new folder named "DCIM".
Open the DCIM folder and create as many folders as necessary to save and
organize your images. The folder name must follow the "100ABC_D" format
where the first three digits is 100 - 999 followed by five alphanumeric
characters. The five characters can be a combination of upper- or lower-case
letters from A to Z, numerals, and an underscore "_". There can be no spaces
in the folder name. Also, folder names cannot have the same three-digit
number such as "100ABC_D" and "100W_XYZ" even if the letters are
different.
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