Canon PowerShot A20, PowerShot A10 manual About file numbering

2 Press or button to select , and then press the SET button.

3 Press or button to select [On] or [Off], and press the SET button.

The [Off ] setting helps ensure that file numbers remain unique over multiple CF cards. This is useful if you are planning to download images from the cards to your computer, since it helps avoid accidental overwrites that may occur if filenames are duplicated.

About file numbering...

Image files are assigned numerical filenames over the range 0001 to 9900. The camera stores these files into folders, which are assigned folder numbers from 100 to 998 (except that numbers ending in 99 are not used). In most cases the camera stores exactly 100 files into each folder. Because the camera cannot switch to a new folder when

taking shots in or mode, however, some folders may have more than 100 images.

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