The intricate optical design and construction of the lens are responsible for its outstanding sharpness and imaging qualities. The Leica Super-Elmar-M 21 mm f/3.4 ASPH. is constructed with eight lenses in seven groups. At the same time, the use of one lens element with two aspherical surfaces and four lenses with anomalous partial dispersion ensure that aberrations are reduced to an absolute minimum.
As with all Leica lenses, the Super-Elmar-M 21 mm f/3.4 ASPH. was designed and developed by Leica specialists in Solms, Germany and represents the perfect combination of optical and technical expertise. Particularly reliable and with enduring value, every Leica lens is manufactured from only the highest quality materials and is assembled with meticulous precision, completely by hand. The combination of cutting-edge technologies and extremely thorough manufacturing processes guarantees consistently excellent quality.
The Leica Super-Elmar-M 21 mm f/3.4 ASPH. is supplied with a high-quality, all-metal lens hood, which should be mounted at all times. The hood not only protects the lens effectively against reduction of contrast by extraneous light, but also against damage and the accumulation of dirt on the front lens element.
The Leica Super-Elmar-M 21mm f/3.4 ASPH. will be available from Leica dealers beginning July 2011.
Leica Super-Elmar-M 21 mm f/3.4 ASPH. : Technical specifications
Angle of view
For 35mm format (24 x 36mm): 91°, 80°, 59°
For Leica M8 models (18 x 27mm): 74°, 64°, 46°
(Focal length equivalent: approx. 28mm)
Number of lenses/groups: 8/7
Aspherical surfaces: 2
Position of entrance pupil: 15.6 mm (to the apex of the first lens
Working range: 0.7 m to ∞
Scales: Combined meter/feet graduation
Smallest object field: 706 x 1059mm (35mm format)
530 x 795mm (for M8)
Largest reproduction ratio: 1:29.4
Settings / function: click-stops and half-stop detents
Smallest aperture: 16
Leica M quick-change bayonet with 6-bit bar-coding for digital Leica M models
Filter mount /
Non-rotating with inner threading for E46 screw-in filters, outer threading with stop for mounting the lens hood (supplied with the lens)
Length to bayonet flange: approx. 43/55mm (Approx. 1.69/2.17in) (with/without lens hood)
Largest diameter: Approx. 53mm (Approx. 2.09in)
Approx. 279g (Approx. 9.84 oz)
Metal lens hood, front cap for lens hood, rear cap, leather case, instruction manual