This lens is the lightest and the most compact of its class and is good for everyday shooting. A water and dust repelling ‘Frog Eye Coating’ is added at the front element of the lens. Featuring a widest angle of view (122°) ever built with a f/2.8 lens, this is an ideal lens for a variety types of photography. From landscape, architecture, interior, travel to the most important, astro photography. It also features a close-to-zero optical distortion, allowing photographers to take landscape/architecture shots with straight lines retained. Users can use CPL / ND filters by adding a optional Laowa 100mm filter holder system.