An interesting artical posted on Jeff Revells website makes for an intersting read.
I was conducting my daily website scan when I saw an article on a new shutter count app that is now available for most Canon digital cameras [credit CanonRumors]. If you aren’t sure what a shutter count is, it is basically a numerical representation of how many times your camera’s shutter has actuated (opened and closed). So what’s the big deal about shutter counts? Well, if you aren’t planning on selling or buying a camera, probably nothing. Most SLR cameras have a shutter count estimate from the manufacturer for the number of reliable shutter actuations you can expect for your camera.