The file name is edited to lower the numerical suffix. If a blank flash card is inserted afterwards, some cameras like the Canon 60D will continue previous filename numbering for example, will write file IMG_4102.JPG when shutter count is 3752.The shutter count in this case will be only 3751. If a new flash card is inserted with a file IMG_4100.JPG, then the next picture taken with the camera will be written under IMG_4101.JPG. The numbering then continues with this higher suffix.įor example, if the last file written by the camera was IMG_3750.JPG, this indicates that the shutter count is 3750. A new flash card is inserted containing a picture file with higher numerical suffix.
Here are examples when the filename does not indicate the true number of pictures taken with the camera. Using numeric suffix of filenames written by the camera on a flash card is not equivalent to camera's shutter count (the suffix resets to 0 after 9999).
