The LEICA - APO-SUMMICRON SL 28mm f2 ASPH. Lens is a versatile wide-angle prime combining a classic focal length with state-of-the-art technology. The 28mm focal length allows for a sharp image from edge to edge without distortion. The bright f/2 aperture strikes a balance between speed and overall weight and offers the ability to separate the subject from the background at f/2 while maintaining maximum sharpness and performance.
This new Summicron-SL prime delivers extremely high imaging performance at its largest aperture, ideal for photography in low-light conditions. Well-suited for everyday shooting and creative photography, images from the lens exhibit natural skin tones, beautiful bokeh, outstanding contrast and corner-to-corner sharpness for a distortion-free image. This lens promises to give Leica SL users one of the most versatile all-purpose focal lengths with powerful image quality and peak autofocus performance, which can find its way into the camera bags of all kinds of photographers.
The optical formula for the APO-Summicron-SL 28mm f/2 ASPH achieves this level of image quality through its design of 13 lens elements, 6 of which are aspherical, in 10 groups. To further correct for unwanted chromatic aberrations, the lens utilizes apochromatic corrections. Complementing the optics is a Dual Synchro Drive AF Motor, which delivers fast and quiet autofocus performance to suit both stills and video applications. Additionally, the lens provides a minimum focusing distance of only 24cm.
Combined with its rugged metal construction, weather sealing against dust and spray water, Aquadura water-resistant exterior glass coatings the LEICA - APO-SUMMICRON SL 28mm f2 ASPH. Lens is an amazingly capable pro-grade tool for all types of photography.
13 lens elements (three of which feature aspherical surfaces on both sides) in ten groups contribute to a maximum level of image quality even at wide open aperture. As is generally the case with Leica lenses, the maximum aperture is synonymous with the effective aperture. Consequently, there is no need to stop down to increase the image quality – instead, reducing the aperture is only necessary for compositional purposes.
Natural skin tones, soft transitions into bokeh, exceptionally contrast-rich details and edge-to-edge sharpness across a distortion-free image: these qualities are very much the norm for Leica lenses. Yet the APO-Summicron-SL 28 f/2 ASPH. is further distinguished by its apochromatic correction, which is a notable feature in a lens of this focal length.
To ensure the optimal correction of chromatic aberrations, the majority of the grouped lens elements feature anomalous partial dispersion, and are made of high-quality, specialist glass types whose construction is so elaborate that even Leica’s innovative production methods are utilised to within every last inch of their capacity.
The autofocus drive employs extremely robust and high-performance stepping motors with DSD® (Dual Syncro Drive™). This enables the AF to travel the entire focusing range in around 250 milliseconds. At the same time, the lens features an entirely new manual focus ring construction in the form of an embedded ring magnet with alternating north-south polarisation. When the ring is turned, the magnetic field changes its polarity. A sensor monitors the status of the magnetic field and sends the data to the main processor. The drive then shifts the lens to the corresponding focusing position on the basis of the angle of rotation and the rotational speed – this, in turn, enables even faster and more precise manual focusing.
Both the construction and the design of the cutting-edge LEICA - APO-SUMMICRON SL 28mm f2 ASPH. Lens represent the next step forward in the development of lenses for the Leica SL-System. New, extremely precise manufacturing methods and measuring technologies have been developed – resulting in more compact dimensions and a considerably lower weight, as well as a truly outstanding imaging performance.
In the construction of the APO-SUMMICRON SL 28mm f2 ASPH. Lens, particular attention has been paid to the prevention of stray light and reflections. In addition to optimising the optical and mechanical design, unavoidable reflections has been reduced to an absolute minimum by applying a high-quality coating to the lens surfaces.
Thanks to effective sealing against dust, moisture and water spray, as well as Aquadura coating of the exposed lens surfaces, theextremely durable LEICA - APO-SUMMICRON SL 28mm f2 ASPH. Lens can be used in almost all weather conditions without any reason for concern.
|Lens Mount||Leica L|
|Angle of View||75.4°|
|Minimum Focus Distance||9.4" / 24 cm|
|Macro Reproduction Ratio||1:5|
|Optical Design||13 Elements in 10 Groups|
|Filter Size||67 mm (Front)|
|Dimensions (ø x L)||2.9 x 4" / 73 x 102 mm|
|Weight||24.7 oz / 700 g|