Mamiya 7 150mm Lens: Rangefinder Cam Repair
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Repairing the rangefinder cam mechanism on a Mamiya 7 150mm lens. This lens came into the shop with a Mamiya 7 body that also needed rangefinder calibration. The lens was off by a bit and coupled with the body rangefinder inaccuracy, there was most likely an issue in focus, especially with a 150mm lens. The flexible ribbon cable seen in the photo is the part that often fails on these lenses. As you can see, it gets stretched a bit and the end by the connector will tear. Symptom is that the camera meter will not respond. The cable in this camera checked OK.
