Leica fish eye 15mm f/3.5 Super-Elmar-RLeica fish eye 15mm f 3. 5 Super Elmar R S, released in 1979, is one of the widest lenses in the Leica R mount. At the time of its release, it was a unique wide angle lens, with approximately 3,000 units produced. It features 13 elements in 12 groups, a five blade aperture, and a minimum focusing distance of 0. 16m. While a filter cannot be attached to the front, a dedicated front cap (14294) is available. The lens also comes with four built in color