Leica Super-Elmar-M 21mm f/3.4 ASPH.

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Leica Super-Elmar-M 21mm f/3.4 ASPH.

Concentrated Quality

The new Leica Super-Elmar-M 21mm f/3.4 ASPH. is characterized by superb imaging performance and amazingly compact construction. This powerful combination makes it ideal for many applications, such as landscape or photojournalistic photography. Even at maximum aperture, the lens delivers outstanding rendition of details and optimum contrast up to its closest focusing distance.

Technical Details

The sophisticated design and construction comprises eight elements - including one with two aspherical surfaces and another four with anomalous partial dispersion - and plays a decisive role in reducing distortion and vignetting to an absolute minimum. The lens is supplied with a metal, screw-mounted lens hood to prevent flare effects and ensure perfect image sharpness.

To meet the requirements of digital photography, the Leica Super-Elmar-M 21mm f/3.4 ASPH is a benchmark in all optical performance characteristics. The stray light optimization was implemented on a very high level, allowing for backlit shots with crystal clear contrast. The design of the metal lens hood matches the appearance of the current wide-angle lenses of the Leica M system. This lens hood is also compatible with the Leica Super Elmar-M 24 mm f/3.8 ASPH and the Leica Summilux-M 35mm/1.4.

The essentials:

  • Diagonal angle of view: 91°
  • Working range: 0.7 m to infinity
  • Biggest scale: 1:29.8
  • Number of lenses/groups: 8/7
  • Length * 1: 43 mm
  • Weight * 1: 279 g
  • Lens hood: can be screwed on
  • Filter/filter thread: E4


The LEICA Camera Blog

  •  Angle of view (diagonal, horizontal, vertical) 
  • For 35mm format (24x36mm):
    91°, 80°, 59°
  • For M8/M8.2 (18x27mm):
    74°, 64°, 46°
  • Optical design
  • Number of elements/groups:
    8 / 7
  • Focal length:
    21 mm
  • Entrance pupil:
    15.6 mm (related to the apex of the first lens surface in light direction)
  • Focusing range:
    0.7 m (2.3 ft) to Infinity 
  • Distance setting
  • Scale:
    Combined meter/feet-increments
  • Smallest object field:
    706 mm x 1059 mm (35mm format); 530 mm x 795 mm (for M8/M8.2)
  • Highest reproduction ratio:
  • Aperture
  • Setting/Type:
    Preset, with clickstops (including half values), manual diaphragm
  • Smallest aperture:
  • Bayonet:
    Leica M quick-change bayonet with 6-bit bar coding for digtal Leica models
  • Filter (type):
    Internal thread for screw-on filters size E 46
  • Lens hood:
    Outer threading with stop for mounting the metal lens hood
  • Dimensions and weight
  • Length:
    43 mm (1.69 in) / 55 mm (2.17 in) (with/without lens hood attached)
  • Largest diameter:
    53 mm / 2.1 in
  • Weight:
    Approx. 279 g / 9.84 oz

Lens, lens hood screwed on, lens rear cover, lens front cover

Limited Warranty:
Leica Camera AG (‘LEICA’) provides a three-year product limited warranty for this LEICA camera valid from the date of purchase from an authorized LEICA dealer, including the accessories contained in the original packaging, which are valid for two years.