<p>Hi all, just a quick question.. Some time back I bought a plain prism Pentax 67 and tested it out by shooting a few rolls. The camera functioned perfectly well, delivering good results, the battery check lamp was lighting up, etc. Having not used the camera for five or six months, I shot another few rolls recently, only discovering towards the end of the last roll that the battery check lamp was not lighting up. The mirror didn't do it's precautionary lock-up which I'm led to believe is the 67's way of telling you to buy a new battery. So, can the 67's shutter continue to perform when the battery is low/dead, or are the few rolls I just shot completely blank?? Any pointers much appreciated.</p>