Minolta SR/MC/MD Lens To Canon FL/FD/FDn Body Adapter

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Minolta's manual-focus SLR lens SR bayonet mount was introduced in 1958 and continued as the compatible MC and MD mounts through 1998. In 1964, Canon introduced the FL lens mount for their SLRs and continued with the compatible FD mount through 1990. Through all that, there haven't been any adapters to mount one type on the other... until now. This adapter allows a SR/MC/MD lens to focus to infinity when used on an FL/FD body -- or, more significantly now, on an FL/FD adapter for a digital camera such as the Sony NEX models. Thus, for example, if you have a bunch of old Minolta and Canon lenses, you can use them all with an FL/FD adapter, FD Lens Turbo, etc. Be warned that this adapter does not fully lock, although the ones I've printed are all very firm fits. Use it at your own risk. On my FD Lens Turbo, the stop-down lever is amazingly close to hitting part of the Lens Turbo, and using sr2fd.stl may interfere with normal stop down. This issue is fixed in sr2fd20130818.stl, which is 0.25mm farther away from the sensor, but still getting infinity focus. As of sr2fd20130827.stl, there is now a stationary "bump" on the adapter that essentially locks the SR/MC/MD lens on the adapter (taking advantage of the material properties of PLA), but the locking action is too aggressive with some lenses and the FL/FD/FDn side is still friction-fit. This remains a work in progress until I have incorporated a complete locking mechanism....

About the author:
ProfHankD
I'm a Professor of Electrical and Computer Engineering at the University of Kentucky, best known for things like having built the world's first Linux PC cluster supercomputer in 1994... although around the 3D-printing world I'm probably best known for my HingeBox (which Tested popularized). My research group (Aggregate.Org) really is about improving computing systems by making the various SW+HW components work better together, which we do for many different types of computer systems: supercomputers, digital cameras, ... and now 3D printers. I had some experience with tool and die making using Bridgeport Series I CNCs as far back as the late 1970s, but my 3D printing adventure started in late 2012 with purchase of a MakerGear M2 for my lab to make custom camera parts in support of computational photography research. I now use multiple MakerGear M2 and Wanhao I3 3D printers, several semiconductor laser cutters, a 3040T CNC mill, a programmable paper cutter, and a small vacuum forming machine.

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