Mamiya C TLR Lens: Two Shutter Checks You Can Do
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Here are a couple of ways to check if your Mamiya C TLR lens needs service:
1.) In the first video, the shutter is released while the cocking lever is held back and made to slowly return to rest position. The shutter should release after removing pressure on it. If not, the shutter needs service.
2.) The second video shows the slight delay in the shutter cycling after pressing the release lever. Again, the shutter needs servicing.
Most of the C lenses that I see do not pass these tests as they have not been serviced for maybe 30-40 years!
