A complete 3D photography solution for the modern Leica M is by Onasj:
I became interested in developing a 3D photography (stereophotography) capturing and viewing solution for the modern Leica digital M—one that does not require special glasses or projectors, or crossing your eyes. This quest was ultimately successful, and I’ve been really impressed with the quality of the resulting 3D images, and amazed by how much the depth axis adds to the impact and compositional possibilities of photography. This article documents my findings, and provides a how-to guide for those interested in doing the same.
As many of you know, Leica prototyped in the 1940s and produced in the 1950s a remarkable stereophotography lens, the Stemar (stereo Elmar), code OISBO. The lens consists of two side-by-side mini-lenses, with a single lever to control the aperture of both lenses. The focal lens of the production lenses is 33 mm, with a maximum aperture of f/3.5. About 1,571 Stemar lenses were made.

The Stemar comes in two mounts: LTM (screw mount) or M-mount. Of course the LTM version can be adapted to the M-mount with a Leica or third-party LTM-to-M adapter.


































