03/30/2009 22:16
I also thought that it could have the purpose of a camera adapted to an underwater case, but if that was the purpose I don't think that the infinity focus lock would have been left in place as it would have engaged during focusing when in the underwater case, causing problems for the diver-photographer.
According to the serial number on the lens, 12406, this camera (if the lens is original to the body) was toward the end of the "classic version" production (with six screws). So possibly this could have been a trial design for a new lens mount style ... maybe a prototype lens mount. There are a number of cosmetic differences and versions of the lens mounts throughout the Sport production.
From the photo it is hard for me to tell if the front edge of the lens mount is actually in the form of a gear, or just part of the focusing grip design like other Sports. Aidas ... what does Viktor think about it?
Regards, Bill