quality standard focal length - Whether shooting stills or video the 50mm F1.8 offers an outstanding mix of high image quality and lightweight portability. The standard 50mm focal length makes it a great lens to keep on your camera all day, giving you the versatility to shoot anything from portraits to landscapes – and the F1.8 aperture gives you creative control over the depth of field and background blur effect. Lightweight and compact design - Designed with the user in mind and weighing in at just 300g and 82mm in length this 50mm is a lens that can live on your S-series without being a burden to carry around all day. The wide manual focus ring can easily identified and reduce the need to take your eye away from the viewfinder when shooting. quality construction - The 50mm contains a number of special lens elements (3 Aspherical, 1 ED, 1 UHR) to ensure image quality across the frame. Details are rendered sharply while chromatic aberration, false colours, vignetting and drop off in the corners is minimised. 4K video compatibility - The lens optical design minimises focus breathing, allows smooth exposure changes and reduces image shifting when zooming making this is ideal lens for shooting video as well as photography. Circular aperture - Thanks to the 9 diaphragm blades and circular aperture means that the background areas of your image will be nicely out of focus to make your main subject stand out, giving you the pleasing rounded bokeh shapes in the background. Max focal length: 50.0 millimeters; Mounting type: Leica L