![]() Newer cameras store more images in each folder, so the mathematics change. Modulo 100 may sound frightening, but in reality it means just take the two right hand digits. Shutter Count = (folder number-100)*100 + modulo 100 file number. ![]() Split the image number into two parts: the last 4 digits (call this file number) and the first three folder number.Thus to convert the image number to the number of shots taken we need to do the following: A twist is that looking at one of the early images I took with this camera is that the folder numbers start at 100 rather than 0. The info is maintained by the camera, but Canon doesnt make it easy to access. But Canon doeesnt do that - nor do they display it in camera - nor do they include any utilities that can view it. The folders each hold 100 files so the first 3 digits increment once every 100 images to reflect the new folder number while the last 4 digits increase to 9999 then rollover to 0. Nikon embeds the shutter count in each image (you look at the last image you took). Under DCIM there are two folders at present: 291CANON and 292CANON. I then realised that the first 3 digits are in fact the folder number on the memory card. That makes more sense – the last image was IMG_9222.JPG. Interestingly, there’s no official Canon based application to find the shutter count for an EOS DSLR, however, there are a few free online tools that may help you to do this. One EXIF data tool reports the number as 292-9222. On my 10D, it shows 2929222 approaching 3 million shots which is clearly wrong. ![]() The number of shutter actuations on older Canon cameras is encoded in the 'Image Number’.
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