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This frame counter displays the number of the picture you have just taken rather than the number of the next picture you will take.
The Canon
When you delete images (with the DELETE button on the camera back or with a software driver), existing images on the PCMCIA card are not renumbered. Consider the figure below. Suppose that you had an empty PCMCIA card, took five pictures, and then deleted image 5 with the DELETE button and images 2 and 3 with the software driver. Image 4 is not renumbered. As new pictures are stored to the PCMCIA card, they are given the next higher number that has not been previously used for an image. In the figure below, new images will be numbered 6, 7, …
Frame number
1
2
3
4
5
6 7
The highest frame number is 39. When you reach frame number 39, the next picture you take will be numbered 1, then 2, then 3, and so on, even if those numbers are already in use.
Therefore it is possible that you may have several images on a PCMCIA card with the same number. Duplicate image numbers do not cause any functional problems.
