>Do you have a reference to show that changing lenses without >turning camera off can hurt the camera or lens?
But that's not what we are saying - our point is that turning the camera off takes very little time and will completely remove any chances of electrical problems caused by clumsy changing of a lens.
>Think about it. Opening the card door shuts off many cameras, >would you think releasing the lens would not disconnect >something?
Opening the card door does not cause ANY Nikon DSLR that I have used (9 different models at the last count) to shut off. And by the way, in the interests of experimentation, I did try pressing the lens release button on one of my D3s's while VR was active on the 70-200mm f/2.8G. VR kept running.
>If this matter was so important it would be posted everywhere...
Maybe it's not posted everywhere because most people are sensible, do as advised, and turn the camera off first most of the time