Well, the MZ-S makes a noise when shaking it. It sounds like a small metal ball that moves when shaking the camera. It's located somewhere in the prism according to my ears. Interestingly, according to the Pentax Image stabilization patent, the camera, not the lenses, have vibration sensors. Could this be what makes a noise when shaking the camera? Most likely it's something entirely different, though; maybe its just a sensor for determining whether the camera is held vertically of horizontally used for metering. I believe my former MZ-S also had the same "noise".
P�l

