Sigma 40 mm F/1.4 Dg Hsm Art Lens For CANON EF
Highlights ef-mount lens/full-frame format aperture range: f/1.4 to f/16 three fld elements, three sld elements one aspherical element super multi-layer coating hyper sonic af motor, manual override weather-sealed, protective front coating rounded 9-blade diaphragm compatible with sigma usb dock features designed within the rigorous tolerances of a cine lens, the canon ef-mount sigma 40mm f/1.4 dg hsm art lens is a wide normal-length lens characterized by a bright design and sophisticated optical layout. The fast f/1.4 maximum aperture helps to achieve shallow depth of field and selective focus effects, and also suits working in difficult lighting conditions. The optical design incorporates a series of low dispersion and aspherical elements, which help to improve sharpness and clarity by controlling both spherical and chromatic aberrations. A super multi-layer coating is also featured, and helps to minimize flare and ghosting for greater contrast and color accuracy.