Extremely fast 24 mm wide-angle lens with Leica image quality and dust and splash protection The extremely fast Leica DG Summicron 1.4/12mm Asph. (24 mm KB) wide-angle lens is ideal for street photography and landscape shots, but can also be used to give the image a dynamic expression or to change the perspective. The lens speed of f/1.4 allows it to be used even in difficult lighting conditions. The aperture can be quickly adjusted using the aperture ring on the Lens. Thanks to its dust and splash protection, the H-X012 is exceptionally robust, making it the ideal companion for the GH4 or GX8. The Leica name on the Lens guarantees the highest resolution and lowest distortion, as well as the mechanical quality of a top optic. It consists of 15 lenses in 12 groups, including 2 aspherical elements, 2 UED (Ultra Extra-low Dispersion) and ED (Extra-low Dispersion) elements. The use of a total of 5 special lenses suppresses spherical aberration and ensures sharp, high-contrast images without reflections or ghost images right to the edge, even in illuminated evening shots. The large aperture allows targeted use of the shallow depth of field. The 9 blades create a round aperture, which ensures a particularly beautiful bokeh in the out-of-focus areas of the image. The internal focusing with stepper motor focuses extremely quickly and quietly with 240 Hz control for both photo and video recordings. Especially at large apertures with shallow depth of field, the contrast AF system of the LUMIX G system cameras demonstrates its advantage of greater accuracy compared to classic phase difference AF systems. The Leica DG Summilux 1.4/12mm Asph. consists of a high-quality metal barrel and a robust, durable metal bayonet as well as a lens hood also made of metal.