39+ Zeiss Sonnar Fuji Mount Gif. Review of the carl zeiss jena ddr sonnar 180mm f2.8 lens mounted on the fuji gfx 50s. My search for a manual focus telephoto prime that is small and yet fairly affordable led me to the zeiss sonnar t* 2.8/90 for the contax g mount (i'll call this the zeiss 90mm going forward, for brevity's sake).
The zeiss ikon contax i introduced a new lens mount in 1932, today known as contax rangefinder mount.
These lenses, as with the zm camera, use the leica m series lens mount. Zeiss currently makes lenses for various brands, with several different mounts: The excellent flare control inherent of the sonnar lens. Zeiss touit 12mm f2.8 review for the fuji x series: