The Samyang f/2.8-22 aspherical lens is a wide-angle lens designed for Sony Alpha full-size digital SLR cameras as well as smaller APS-C models. This 14 mm lens is a manual-focus lens, requiring use of the viewfinder or live-action view and a focus dial on the lens itself. Aperture ratings from f/2.8-22 are possible with the Samyang f/2.8-22 aspherical lens but must be controlled by hand directly on the 14 mm lens. The camera will show an aperture reading of f/0. Metal and high-quality plastic produce a smoothly functioning lens with a bulb or petal-like shape. The shape of the lens, multi-coated optical glass, and dual aspherical optics provide clear wide-angle photos with accurate color when using the Samyang lens for Sony. A deep, protective lens cover is included with the Samyang f/2.8-22 aspherical lens. With the Samyang lens for Sony, both hobby and professional photographers can explore and experiment with beautiful wide-angle photography.