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Leica Summilux-M 21 mm f/ 1.4 ASPH Lens

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Leica Summilux-M 21 mm f/ 1.4 ASPH lens

Leica Summilux-M 21 mm f/ 1.4 ASPH lens

Leica Summilux-M 21 mm f/ 1.4 ASPH lens

MTF-charts

Leica Summilux-M 21 mm f/ 1.4 ASPH MTF Chart

Leica Summilux-M 21 mm f/ 1.4 ASPH MTF Chart

Optical design

Leica Summilux-M 21 mm f/ 1.4 ASPH optical design

Format: 35mm rangefinder

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: Leica M

First year of production: 2009

Optical design: 10 elements in 8 groups

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Average price: $7933

Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
21mmf/1.4f/1690.43866580/20,566/2,6

Additional information:

The Leica Summilux-M 21 mm f/ 1.4 ASPH  is a  superwide-angle ultra fast lens  with multi-coating and almost completely  corrected distortion for  Leica-M rangefinder cameras.

As for the time of this review it was the fastest lens for 35 mm cameras with such a focal length.

With diagonal angle of  view of 92° it is  fit for  outdoor and indoor photography when wide open.

The optical scheme of  the Leica Summilux-M 21 mm f/ 1.4 ASPH includes 10 lenses. Aberrations are well corrected. In order to correct chromatic aberration five lenses are made of optic glass with partly anomalous dispersion, the two are aspherical.

To maintain high image quality and resolution one of the rear lens groups is floating and moves independently when shooting  close-up.

Vignetting is slight and visible only when wide open, while distortion is almost absent (maximum level of distortion  does not exceed 3.2%).

Due to its small focal length and very large depth of field, the Leica Summilux-M 21 mm f/ 1.4 ASPH can be used at hyperfocal range.  In this case focusing and shooting can be very fast.

The table of  depth of field:

The lens is well done in a constructive way. The body is metal  without plays and with very smooth movement of the rings.

The quality is compliant with high standards of Leica. The image is sharp, rather contrastive with good color and at the same time with good volume.

The Leica Summilux-M 21 mm f/1.4 ASPH is ideal for shooting landscapes, interiors, as well as for genre photography. Perhaps its only shortcoming is a prohibitive price.

It comes completed with a rectangular hood and extra cap. It is fit for mounting on filters of the VIII series.

The lens can be used by means of adapters on mirrorles Sony NEX and Micro 4/3 cameras.


Links to online resources:
Posted by: Sergei Borodin   Date of publication: 09.11.2010


Mechanical quality5.002
Optical quality5.002
Usability4.502
Pricing / Value3.002
Bokeh5.002
Overall lens rating
4.50

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