I got myself a Miranda SLR a year ago. It is a functional fully manual camera which has the rather rare distinction that you can change the ordinary prism viewfinder for a waist-level one. I also found out that I at a good price could get an adapter to use my M42 mount lenses on it.
I mostly use a Helios model 44 58 mm lens on it, and have taken some pictures with ND filters too.
The lens is a favourite. It was made in the former Soviet Union and came as a kit lens for Zenit 3 and 3M cameras. Zenit sold a lot of cameras in Western Europe as well.
I certainly like the pictures the lens produces. The kit with Miranda equipped with a waist-level finder makes you a very slow photographer since it's difficult to focus with such a small matte-screen inside the finder. And you almost always have to use the loupe for focusing. It takes a while to get used to, but once you're on a roll (no pun intended) the process goes smoothly.
I modded a lens from a very compact fixed-lens camera to my very compact Olympus Pen F. The originating camera is a (how's that for a name!) Zeiss Ikon Voigtländer Vitessa 500 AE Electronic. The lens is a Color Lanthar 42 mm 1:2.8. On the Pen, which takes half-frame pictures, the lens will show what a 63 mm lens would on a full frame 35 mm camera.
That's the insides of it. I would have loved to used it but there were several issues with it that I couldn't get my head around.
The distance from the lens to the film plane on this camera is very short. I figured I could mount it on an M39 screw mount and use it on my X-Pro camera but there wasn't enough space. And M42 mount was out of the question since SLR:s have to leave room for that lovely mirror slapping up and down. I did try it on the Pen F and I could get focus! However the albeit differently constructed mirror was in the way. The cylinder which the lens is mounted in was protruding as to collide with the moving…
I am in the process of making a special lens mod. Just waiting for a part to be shipped to me. It will result in a rare combination of two rare parts...
Oh, all right. On the camera end I am using my Olympus Pen F. Above you can see the lens without its mount. It will be a true 'pancake' lens - which protrudes very little from the camera body. I will not tell which is the lens. Though the camera providing the lens has Ikon in the name... Any guesses?