Leica Summilux-M 28mm f/1.4 ASPH. The first Leica M-lens to combine an initial aperture of f/1.4 with the popular 28mm wide-angle focal length. This high speed wide-angle lens offers photographers high imaging performance with an unmistakable visual signature.
The Leica Summilux-M 28mm f/1.4 ASPH. rounds of f the range of high-speed M wide angle focal lengths. It offers excellent image performance over the entire image field even at full aperture and in the close-up range thanks to a floating element. With its exceptional contrast, the lens delivers the same recognized high performance level as the Leica Summilux-M 35mm f/1.4 ASPH., and in some respects actually out performs it.
The vignetting that is typical of every optical system is naturally more defined on a wide angle lens, particularly a high speed one like this, than on standard lenses or those with a long focal length. At full aperture in 35mm format it is a maximum, i.e. in the corners of the image, of around 3.4 stops, around 2 stops on Leica M8 models with their slightly smaller format. Stopping down to 5.6 visibly reduces this light falloff – to 1.8 and 0.8 stops respectively. Stopping down further does not bring about any notable reduction as essentially only the natural vignetting remains. Distortion is extremely low for a wide angle lens at a maxi-mum of 1.1%, which is rarely noticeable in practice. A total of ten lens elements are used to achieve this exceptional performance. To correct color defects, seven of these are made of glass types with anomalous color dispersion (partial dispersion), while one has an aspherical surface. To maintain performance in the close-up range, one element towards the rear of the optical system is a “floating element” that moves independently of the rest of the mechanism.
Features of the 28mm Summilux-M ASPH
- Screw-on lens hood
- Close focus of 0.7 M
- Optical lens/groups 10/7
- 10 blade aperture
- 49 mm Filter mount
- Dimension 81 mm in length
- Weight 440 g
Item Specifics
Leica product code 11668
S/N 4205857
This lens would be a great addition to your M-System. The lens is clean but shows signs of normal use. The focusing ring moves very smoothly with nice drag. The aperture ring moves freely with positive detents. The glass is clear and free of scratches, haze, fungus, and dust.
Service has been completed recently by Leica. The work performed was to repair focus, de-grease aperture blades, and clean, lubricate, and adjust all parts for proper working order.
Item Includes
The 28 mm Summicron-M lens with the lens hood with cover, rear protective cap, and leather case.
Warranty
Leica 1 year warranty
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