The 9 mm f/2.8 ZERO-D ultra wide-angle lens is currently the most extreme wide-angle lens with a speed of 2.8 for APS-C cameras. With its 113° angle of view, it opens up extraordinary perspectives for photographers. With an overall length of 60 mm and a diameter of just 53 mm, it is ultra-compact and extremely light, weighing just 215 grams. This makes it the ideal companion for all mirrorless system cameras. It fits into any photo bag and even feels at home in a trouser pocket. Thanks to the small front lens, all conventional screw-in filters with a diameter of only 49mm can be used without vignetting. Two aspherical lenses and three lenses with extremely low dispersion reduce both chromatic aberration and optical distortion to an absolute minimum. This design also ensures outstanding sharpness right into the corners of the image. The 9 mm f/2.8 ZERO-D is also ideal for video photographers - both hand-held and with a gimbal. The focus is set manually, as is the aperture setting.