>I have never shut-off the camera while changing lenses with >VR, OS, IS on at all times. Most of my lenses are VR, OS, IS. >Never a single problem and I have done it thousands of times. >As another poster here pointed out that more dust gets in from >zoom lenses than from charged CMOS. Plus before you put rear >cap on dust gets in the lens on the rear element and then due >to turbulence of mirror that dust gets on everything. >And I know that as soon as you disconnect the lens electrical >contacts become inactive. It is build in to every camera >otherwise every one would have problems. Just think about it, >if you clean the camera's sensor you need to remove the lens >while camera is on. Right?
Aren't you the guy who's always complaining that your Nikon equipment is screwed up and you had to take it in for repair?
My suggestion is to try to remember to turn the camera off before changing lenses, as it minimizes the potential for a problem, whether it is dust, screwing up the VR or some other electrical glitch. Keep in mind that your DSLR is an electrical device, not a mechanical/optical one.
Forgetting occasionally probably won't kill the camera, but why purposefully do take the chance. As you can tell from reading this thread, most people feel that turning it off is the right thing to do.