This high-speed, single-focal-length, wide-angle lens is ideal for shooting high-quality, dramatic landscapes and street scenes in low-light conditions. It has a beautiful full-metal body and a snap ring that enables photographers to pan focus with a distance indicator. The Movie-Still-Compatible (MSC) mechanism utilizes nearly "silent" focusing technology. It is great for tracking a moving child or pet, and provides a quick and silent focus mechanism for movies and still photography. 12mm Focus Length. F2.0 Maximum Aperture. Maximum Image Magnification .08x. 84 degree Angle of View. F22 Minimum Aperture. High-Speed Imager AF (MSC).