Reflexa 35mm SLR with Canon 50mm f/1.9 lens in a modified Exakta mount This is a complex story. Mamiya is an Japanese company whose manufacture of cameras goes back into the 1950s, and they are known today mostly for their medium-format cameras. They discontinued manufacture of 35mm cameras in the 1980s, and their current website has essentially no information about those cameras. The Prismat However, way back in 1961, Mamiya decided that they would try to break into the developing 35mm SLR market. Their first (?, although note the Sears Tower 37 of 1960 mentioned below) 35mm SLR product was a camera called the Prismat NP. It had a fixed prism, no meter, and a cloth focal-plane shutter. Lenses Its house brand lens was a Mamiya-Sekor semi-automatic 58mm f/1.7 in (get this) an Exakta bayonet mount. Non-automatic Exakta lenses will mount and function on the Prismat. Automatic Exakta mount lenses (typically with an external aperture will mount, but the automatic aperture mechanism of the Prismat is located at a different part of the lens, so the Exakta lenses will not stop down automatically on the Prismat. The Prismat lenses will not mount at all on an Exakta without removing the semi-auto aperture connection. To add prestige to their line, the higher-quality lens for the Prismat was a "Canon OM 50mm f/1.9" semi-automatic lens. In 1961, according to Bob Shell's Canon Compendium, Canon had a minority share in Mamiya and shared a distributor. More background This is where I come into the story. I collect old DDR SLRs and other cameras, and this involves Exakta, naturally. I was intrigued when I read about a Canon lens in this mount, so I cast upon the waters, and found, not a Prismat with the Exakta-mount Canon lens, but something called a Reflexa. It turns out that the Prismat was rebranded and sold under the Reflexa name in Great Britain, where the eBay vendor was located. It was also sold in the United States as a Tower 32B (and something that looks similar is the Sears Tower 37 in 1960). I don't have a catalog with the 32B in it so I am not sure if the Canon lens was available on the Sears model. The Story Proper Anyway, the Reflexa was honestly described as pretty beat up, but the Canon lens on it was in good shape. At some point, the camera had been bounced or dribbled down a stone staircase or some such, and the top of the camera looks much worse in person than it does in the photographs below. There is a repair shop label on the inside, and the camera appeared to fire its shutter, etc. when I got it. I was very disappointed to learn that the lens could not be mounted on a Exakta body, so I let this one sit for a while before testing it. I finally got some of my 1990-expired Tri-X into it (which has worked just like new film in a number of cameras). It sat for a while after some initial shots (sometimes it takes a long time to shoot up 36 exposures). Finally, on New Year's Day, we had a patch of sun and I got out into what turned out to be a very cold day. After shooting a few shots in the cold, the shutter started to make funny sounds, but I shot on since I thought I was near the end of the roll (the frame counter was a casualty of the drop-kick). Not to leave a mystery-- apparently the funny sound was the shutter or whatever actually starting to work, since those were nearly the only pictures on the roll that came out, aside from a few at the start (that looked like there had been a light leak or perhaps the speeds were way off. When I examined the pictures that did come out, it was also clear that the focus shown from the mirror/viewfinder was no longer "exactly right". The lens seems to be OK, but perhaps the mirror is off ? Regardless, what I had focused on, was not what was in sharpest focus. First the camera, lens, and the Actina Super-Scru filter (yes, really). Apparently this little filter gave nearly its all to protect the lens when the camera was dropped, as shown in the pictures. It is the strongest argument for a protective filter that I have personally experienced.