Leica Super Elmar M 21mm f/3.4 ASPH Wide Angle Lens for M Mount Cameras - Perfect for Landscape, Architecture & Low Light Photography

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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. With the Leica M8 and M8.2, the Leica Super-Elmar-M 21mm/3.4 ASPH has an equivalent focal length of 28 mm making it a practical standard wide-angle lens for use with the Leica M8 and M8.2.
- Wide angle view for architecture, street and landscape photography
- Excellent image quality at full aperture. Distortion, vignetting and chromatic aberration have been reduced to a minimum
- Convenient to carry because of its compact size
- Flare resistant design allows for images under extreme backlight conditions
- The f/3.4 lens speed in combination with the short focal length allows sharp images even in available light situations
- Metal lens hood is included in the scope of delivery
- Can be used not only with digital M-cameras but with all Leica analog M-cameras since 1954
- Made in Germany

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	1:29.4
Aperture
Setting / Type	Preset, with clickstops (including half values), manual diaphragm
Smallest aperture	f/16
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
Accessories included	Metal lens hood, front cap for lens hood, rear cap, leather case, instruction manual