A couple years ago, I was out shooting on the streets with a late–1940’s model Leica III. As often happens, a stranger approached me, pointed at my camera and struck up a conversation. Ninety-nine times out of a hundred, the dialogue follows a predictable path: I’m asked if film is still being made; why I’m shooting it; and where one goes to get it developed. But this was not one of those ninety-nine times.
Instead of initiating the expected discussion about the availability and merits of film, the gentleman’s first question was “can you still find batteries for that thing?”
I replied that the camera didn’t require batteries, to which he responded, “then how can it possibly work?”
I told him it was all mechanical.
Source (http://www.ultrasomething.com/)(image http://us.leica-camera.com/)