The versatile OM SYSTEM M-Zuiko Digital ED 20mm f/1-4 PRO Lens is a 40mm equivalent wide-angle prime lens for Micro Four Thirds mirrorless cameras- The wide field of view is complemented by a fast f/1-4 maximum aperture for controlling depth of field and producing selective focus effects, and when working in difficult lighting conditions- This pocket-sized lens is easy to carry and balances high resolution with the ability to capture soft, feathered bokeh- This lens makes long days of shooting landscapes, nature, or travel photos seem effortless- Reliable IPX1-rated weather sealing makes it possible to shoot in any environmental conditions without worry- Two aspherical elements are used in the optical design to help reduce spherical aberrations in order to achieve a high degree of sharpness, and also help reduce the overall size and weight of the lens- The Movie & Still Compatible (MSC) autofocus system provides precise, fast, and quiet focus performance to suit both video and photo applications- {Key Features} - Micro Four Thirds System - 40mm (35mm Equivalent) - Aperture Range: f/1-4 to f/16 - 11 Elements in 10 Groups - 1 Super ED, 3 ED, 2 Super HR Elements - 2 Aspherical Elements - ZERO Zuiko Extra-Low Reflection Coating - Movie & Still Compatible AF System - Weather-Sealed Construction - Rounded 9-Blade Diaphragm {Box Contents} - OM SYSTEM M-Zuiko Digital ED 20mm f/1-4 PRO Lens - LC-58F Front Lens Cap - LR-2 Rear Lens Cap - LH-61G Lens Hood - CS-53 Lens Wrap Cloth