The Leica Summilux-M 21 mm F1.4 ASPH. offers a wide field of view coupled with a very fast maximum aperture, making it ideal for available light photography. Accurate framing on one of Leica's M-series rangefinder cameras requires a separate optical viewfinder, but focus and metering can be set from the camera, in the normal way. Optical construction consists of ten elements in eight groups, with two aspherical elements and a floating group for optimal performance at close focusing distances.
Leica Summilux-M 21mm f/1.4 ASPH Lens
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|Lens type||Prime lens|
|Max Format size||35mm FF|
|Focal length||21 mm|
|Lens mount||Leica M|
|Aperture notes||Detents at half stop increments|
|Special elements / coatings||2 aspherical elements 5 anomolous dispersion elements|
|Minimum focus||0.70 m (27.56″)|
|Full time manual||N/A|
|Focus method||Extending front|
|Focus notes||Floating focus system|
|Weight||580 g (1.28 lb)|
|Diameter||70 mm (2.74″)|
|Length||66 mm (2.6″)|
|Filter notes||Series Filter VIII in lens hood|
This is a good lens on my M9. It is large by rangefinder standards but not so big that it is too much of a burden to use. The focus tends to stay put when its set so zone focusing is easy and you dont have to worry too much about the focus changing while you are wandering around. Of course the f1.4 is the main event here and it does not disapoint. Hitting focus is easy even at 1.4 and it is interesting to use for a lot of situations. This lens does not have as much contrast as my Zeiss 21 ...