Anyone here have a Pentacon 6? I picked one of these up on Ebay about three years ago, and it's sat in the closet ever since. Well, I got it down and started messing with it today. Cosmetically it is in perfect condition. When I bought it, the PO said there may be an issue with a sticky shutter. But I am completely unfamiliar with this camera. My question is this, under normal operation, when the shutter is released, should the mirror stay locked in the up position until the film is advanced? The aperture vanes stay in place also. Is this normal? That's what mine does, but it does it repeatedly, regardless of the shutter speed selected. As soon as the film advance lever is cycled, the mirror drops and the aperture vanes retract. Any help would be appreciated. Thanks!