Joseph McAllister wrote: > It's a bit complicated, but yes, it uses the same latchpin as the > inner breech lock bayonet.
Ahh. I might have a closer look when I return to the camera shop on Sunday. I'll have the 6x7 with me as I need to borrow one of their little screwdrivers to adjust the film counter on it. > If that's not done, the lens mount can move around enough to > unlatch itself, leaving less than an eighth of a turn before it drops > off the camera. As I found out the hard way. The lens landed in an open box full of Lowepro bags. I managed to keep enough composure during my near- heart-attack to keep the body in my hand. I expect focussing-induced disasters to be less likely with the system mounted on a tripod (the 400/4 has a tripod mount). > By the way, the extension tubes I have are in no way automatic, having > no coupling to anything other than the bayonet and the latching pin. Thats right. All the outer bayonet lenses are fully manual. Pentax Canada's web site has a pretty good 6x7 lens page if you're after a reference. Cheers, - Dave http://www.digistar.com/~dmann/ (out of date) - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .

