LEICA Elmarit-R 28mm f/2.8 MF “Leica R Only” Cam Lens Boxed #3370272

Despite its eight air-spaced elements and retrofocus design, the very compact 28mm Elmarit-R f/2.8 protrudes only 40mm forward from the camera body, and weighs in at a mere 9 1/4 ounces. Although many air-glass interfaces were required for the correction, their surface curvatures are so gradual that reflections are imaged far forward of the film-plane, thus enhancing optical contrast and eliminating problems with strongly back-lighted subjects common to this 76-degree extreme-wideangle focal length. The optimum aperture, after which stopping down increases the depth-of-field without improving the resolution, falls between f/4 and f/5.6, with a remarkably flat field for this local length.