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Leica Summilux-M 21mm f/1.4 ASPH. Lens

BH #LE2114MB • MFR #11-647
Leica Summilux-M 21mm f/1.4 ASPH. Lens
Key Features
  • Leica M-Mount Lens
  • Aperture Range: f/1.4 to f/16
  • Two Aspherical Elements
  • Five Low Dispersion Elements
An impressively wide and fast lens, the Summilux-M 21mm f/1.4 ASPH. from Leica is a versatile M-mount prime delivering exceptional image quality. The super wide-angle focal length is complemented by the use of five anomalous partial dispersion and a pair of aspherical elements to suppress chromatic and spherical aberrations in order to deliver a high degree of sharpness and clarity with well-controlled vignetting and distortion. The optical design also incorporates a floating elements system to provide consistent image quality throughout the focusing range.
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Leica Summilux-M 21mm f/1.4 ASPH. Overview

An impressively wide and fast lens, the Summilux-M 21mm f/1.4 ASPH. from Leica is a versatile M-mount prime delivering exceptional image quality. The super wide-angle focal length is complemented by the use of five anomalous partial dispersion and a pair of aspherical elements to suppress chromatic and spherical aberrations in order to deliver a high degree of sharpness and clarity with well-controlled vignetting and distortion. The optical design also incorporates a floating elements system to provide consistent image quality throughout the focusing range.

Super wide-angle prime features a bright, fast f/1.4 maximum aperture to benefit working in low-light conditions and for greater control over depth of field.
Five anomalous partial dispersion elements reduce color fringing and chromatic aberrations for increased clarity as well as consistent, even illumination and well-corrected vignetting.
Two aspherical elements suppress spherical aberrations and distortion for improved sharpness.
Floating elements system achieves consistent image quality throughout the focusing range, even at the minimum focusing distance of 2.3'.
The front of the lens is male threaded to accept the included lens hood and the hood is designed to accept Series 8 filters.

Leica Summilux-M 21mm f/1.4 ASPH. Specs

Focal Length21mm
Maximum Aperturef/1.4
Minimum Aperturef/16
Lens MountLeica M
Angle of View92°
Minimum Focus Distance2.3' / 70 cm
Macro Reproduction Ratio1:29
Optical Design10 Elements in 8 Groups
Focus TypeManual Focus
Filter SizeNone
Dimensions (ø x L)2.7 x 2.6" / 69.5 x 66 mm
Weight1.3 lb / 580 g
Packaging Info
Package Weight2.6 lb
Box Dimensions (LxWxH)11.5 x 7.5 x 6.1"

Leica Summilux-M 21mm f/1.4 ASPH. Reviews

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question

Can this fit on a Ef mount or a Nikon D800 camera?What format is this lense for?
Asked by: Anonymous
The 21mm f/1.4 Summilux-M Aspherical Manual Focus Lens has the M-Mount. It would not be compatible with Nikon or Canon DSLRs. It is compatible with Leica, Voigtlander, and Zeiss M-mount rangefinders.
Answered by: Christina S.
Date published: 2018-08-27

question

Is an external viewfinder (a must (required) for this lens?
Asked by: Salvador M.
If you use a Vies on a Leica Rangefinder the entire image will be visible in the EVF.
Answered by: Louis
Date published: 2022-02-12

question

This is made to attach to the Leica M7 TTL .72?
Asked by: Beverley G.
I don't know about the m7 i have it on the m9 240. it is wider than the range finder - so you need to get the OVD great lense, very sharp and very fast.
Answered by: Tony W.
Date published: 2018-08-27

question

What size should be the filter(s) to be used with this lens ?
Asked by: Denis L.
You can find the Series 8 filters on BH by searching for ND filters and then scrolling down to the bottom of the filter size list. They are at the bottom of the list. I use the 0.9 (three stop) filter. The reason for the special filter is that they sit behind the lens hood and are not screwed on. There is a slight noise (do to movement of the filter) which is normal. With the M (240), you can leave the filter on and simply switch between ISO 200 for outdoor photos in daylight and ISO 3200 for evening or indoor photos. (Kudos to Thorsten Overgaard!)
Answered by: Ben S.
Date published: 2018-08-28
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