Mamiya RB67 universal lens rear cap, also fits 50mm Sekor C with a thickening ring
Print Profile(1)
Description
Mamiya RB67 universal lens rear cap, 3D printed version. Currently, when I use my RB67, I mainly alternate between a 50mm Sekor C and a 127mm KL. My camera is an RB67 Pro-SD, and when using the lenses, a mount thickening ring is worn. The 50mm lens is quite special, and its rear cap is not interchangeable with those of other focal lengths, requiring a specific cap with a certain depth.
I searched online for a long time, but couldn't find anything with both the necessary depth and the dimensions to fit lenses with a thickening ring. After much effort, I ended up designing and 3D printing one myself. I tested over a dozen versions, and currently, this version achieves a good balance in terms of installation tightness, fit, and surface finish. It is primarily designed for the Mamiya Sekor C 50mm lens with a thickening ring, providing a perfect fit, and can also be used with most other Mamiya RB67 lenses.
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