I just sent my D700 for a clean. It's cheap and quick. Then I asked the technician how they do it, and he just showed me a tweezer and said they clean it like how they will clean lens. Of course the trick is not to damage the glass and without any residue. I thought it will be more sophisticated, or may be it's just him?
So how do the professional technicians do it?
So how do the professional technicians do it?
