Product Description An impressive ultra wide-angle prime, the EF 14mm f/2.8L II USM is a Canon L-series lens well-suited for landscape, nature, and interior photography applications. Its relatively bright f/2.8 maximum aperture is well-suited to working in difficult lighting conditions and also makes this lens an ideal choice for astrophotography. The optical design incorporates two aspherical elements and two ultra-low dispersion elements to control both spherical and chromatic aberrations in order to realize a high degree of sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and color fidelity when working in backlit and harsh lighting conditions. A ring-type USM and internal focusing mechanism also afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying climates. Product Specification Canon EF 14mm F/2.8L II USM Focal Length 14mm Maximum Aperture f/2.8 Minimum Aperture f/22 Lens Mount Canon EF Format Compatibility Full-Frame Angle of View 114° Minimum Focus Distance 7.87" / 20 cm Maximum Magnification 0.15x Optical Design 14 Elements in 11 Groups Diaphragm Blades 6, Rounded Focus Type Autofocus Image Stabilization None Filter Size Gel Filter (Rear) Dimensions (ø x L) 3.15 x 3.7" / 80 x 94 mm Weight 1.42 lb / 645 g