If you’re planning to purchase a used DSLR camera, this is a very important specification to check. Photo by Marco Xu on Unsplash Why Do You Need to Know Your Digital Camera’s Shutter Count? Sometimes, cameras surpass the expected shutter count and sometimes, they fall short and require a replacement shutter.įortunately, all cameras have a means of determining the count, so you can get a basic idea of how much lifespan remains for your shutter. This is the average expected amount of shutter actuations your camera will most likely deliver before the shutter fails. When shopping for a new camera, you may have noticed a specification called a shutter rating.

This number matters because all digital cameras have different shutter life expectancies. Your camera’s shutter count or shutter actuation number is the number of times you’ve physically fired your camera’s mechanical shutter. So, if your digital camera doesn’t spend most of its time on a shelf collecting dust or nestled safely in a camera bag, it’s important to know your shutter count. The age of your camera has less to do with its lifespan than its amount of use. Newer cameras store more images in each folder, so the mathematics change.Unless your digital camera or DSLR camera is brand new, it’s a good idea to periodically check your shutter count. 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 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. 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. 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’.

Shutter count canon 600d online