Mamiya 80mm f/2.8 S C Lens: Swapping a Shutter Missing Parts
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
A Mamiya TLR 80mm f/2.8 S lens came into the shop for routine cleaning. On opening the shutter I discovered that someone had “borrowed” several parts from inside including the speeds escapement! This was quickly becoming an uneconomically feasible repair. After contacting the person who sent me the repair, he arranged to have another 80mm f/2.8 that was in good condition sent to me in order to swap shutters (the “S” version has coated glass). Not a major job, but the flash sync terminal connector needs to be changed and you have to make sure to carefully check focus as the shutter and viewing lenses have a series of shims to adjust for manufacturing differences. A previous post shows how I check that both taking and viewing lenses are focusing the same. This is very important and I do check all the Mamiya C TLR lenses that come through the shop and many of them are not tracking focus properly.
