AntonioReyna wrote:
...there is a 1DX body... with 440,000 shots... seller says it works great.... Never had a shutter problem.
Shutter count is like mileage on a car. It gives you some idea how much use the camera has had and a very rough idea of how much life it might still have in it.
And it has to do with a lot more than just the shutter... just as in a car there are a lot more moving parts than just the odometer. There are mechanical components such as the mirror mechanism in a DSLR and all those buttons, switches, doors, weather seals and electronic components.
But, like miles on a car, not all clicks on a camera are equal. Someone who has only ever shot still photos with a camera might have a high shutter count, but only very little time on the electronic components. If someone averaged 1/250 shutter speed and only shot stills, they would need to take almost 1 million shots (900,000 actually) to put a full hour of time on the camera. In contrast, someone who shoots a lot of video might rack up very few clicks, but a lot of time. To reach the same hour of usage, a videographer would only need to take 250 fifteen second video clips.
I'm pretty sure Canon rated both the original 1DX and the 1DX Mark II to give 400,000 shutter actuations. With the 1DX Mark III it was increased to 500,000. But these are just MTBE or "mean time between failure" estimates... so a lot of them can be expected to last well beyond the rating. Also, the rating is based upon working knowledge of the components being used to build the camera, not on any sort of actual durability testing.
There's a website that gathers information about camera durability that may be useful, although it's purely voluntary and far from scientific data so take it with a grain of salt. At that site a relatively small sample of 1DX show that approx. 3/4 were still working with between 500,001 and 1,000,000 clicks on them. It's a very small sample, though: Out of 12 1DX there were 9 still working and 3 that died with this level of usage. Two more even exceeded 1 million clicks, but neither of them survived to 2 million.
http://www.olegkikin.com/shutterlife/canon_eos1d_x.htm In fact, you can find info on most cameras at that site:
http://www.olegkikin.com/shutterlife/sitemap.phpBut, again, it's far from scientific data. Many people don't know or report the shutter count when their camera fails. Plus cameras can fail for any number of reasons... included improper use... and might get reported. There's no confirmation of the information submitted, either... anyone can submit whatever they like. Through their factory service departments, the camera manufacturers probably have much better idea of the durability of their cameras.... but they don't share that info.