Specification :
A wide, fast prime designed for Leica M-mount rangefinder cameras, the black Summilux-M 28mm f/1.4 ASPH. Lens excels in low-light conditions and is also characterized by its consistent sharpness and clarity throughout the aperture and focusing ranges. One aspherical element and a floating elements system, as well as seven elements made from anomalous partial dispersion glass, help to produce color-correct, sharp imagery with minimal distortion and aberrations. The manual focus design of the lens is aided by a focusing tab for critical control and the fast f/1.4 also lends itself to selective focus control for isolating specific subjects within the frame. Featuring a versatile wide-angle focal length with a sophisticated optical design, the Summilux-M 28mm f/1.4 ASPH. rounds out the full set of fast-aperture primes dedicated to offering the utmost in imaging capabilities.
| Focal Length | 28mm | 
| Maximum Aperture | f/1.4 | 
| Minimum Aperture | f/16 | 
| Lens Mount | Leica M | 
| Angle of View | 75° | 
| Minimum Focus Distance | 2.3' / 70 cm | 
| Macro Reproduction Ratio | 1:21.9 | 
| Optical Design | 10 Elements in 7 Groups | 
| Focus Type | Manual Focus | 
| Filter Size | 49 mm (Front) | 
| Dimensions (ø x L) | 2.4 x 2.6" / 61 x 67 mm | 
| Weight | 15.5 oz / 440 g | 
| Package Weight | 1.5 lb | 
| Box Dimensions (LxWxH) | 5.5 x 4.6 x 4.6" |