RB67 37mm Fisheye: Mounting Problem and Delayed Shutter Release
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Servicing a not too common lens for the Mamiya RB67 - the 37mm Fisheye, the widest lens made for that system. This example would be one of the earlier copies, made in December of 1975 and like all the 37mm Fisheye lenses for the RB67, is multicoated.
Complaint on this lens was that the lens would not mount on the body and also that the shutter was delayed in releasing. The release issue is common, the shutter needed disassembly and cleaning/lubrication. The mounting issue was caused by impact damage to the rotating lens mount ring. As you can see in photo three, the lens mount took a pretty good hit. Photo four shows the lens mount ring removed from the lens and undergoing body work in the lens ring straightening fixture.
