Ha, my F2 makes that chime sound. But it does it even with the mirror locked up, which makes me think the sound comes from the shutter, rather than the mirror. I wanted to fire my FM2 to remind me of what it sounds like, but it has IR film in it right now.
Originally Posted by MFstooges
I agree with Kiron Kid about the self-timer on the FM/FEs-- it's so convenient, it doesn't make sense not to use it when working with a tripod. That said, my photos have never shown signs of mirror vibration with my FM2 (I don't have experience with the FM), either with long lenses on a tripod, or hand-held at 1/15" (or slower). Mirror vibration issues commonly reveal themselves as "double-images" on film, correct?