Though this disclaimer is given, users have reported that the utility has worked with the EOS-1D Mark IV model. “The shutter count information is available *only* on Canon DIGIC III/IV DSLRs *except* the 1D* series.”

It is stated on the Astrojargon website that: The utility is free and will work on most EOS models. Mac users can utilize this version, and the newer version, EOSInfo, is currently only for Windows users. Freeware Utilities for finding shutter count: 40DShutterCount & EOSInfoĤ0DShutterCount Utility (Version 2) – developed by Astrojargon, was originally for the EOS 40D, but it can work with other EOS models.

They’ve helped us photographers out a lot. All Most of these utilities are free, and if you can spare, donate to the developers. But for the most part, there’s a utility available for your EOS model. There’s no tool that works seamlessly for all EOS models, let alone on both Windows and Mac platforms. 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. There you can find out the average life expectancy for your EOS model(s). In fact, the Camera Shutter Life Expectancy Database is a really neat user-based site for DSLR models of several brands, including Canon. Typically this count is between 100,000 and 300,000 shutter actuations, with the latter limit associated with the EOS-1D models. Usually, you’ll have to take a couple hundred thousand photos before this happens though, and Canon has allegedly released a particular shutter actuation threshold to indicate the number of shots expected for each EOS model before the shutter fails. At this point, you may either need to have the shutter replaced or purchase a new camera. Sooner or later, your DSLR’s shutter will wear, slow down and eventually stop functioning. Just as with any piece of mechanical equipment, a camera has a lifetime that is based on the number of shutter actuations otherwise known as shutter clicks or the shutter count. Shutter Count Number is important – A DSLR’s shutter will eventually fail

Canon 400d shutter count online