The Canon EF 50mm f/1.4 USM is a flexible prime lens with a bright maximum aperture of f/1.4 designed for low-light shooting and achieving a shallow depth of field. It features a Gaussian optics design with two high refractive index elements, reducing spherical aberrations and distortion for sharp and clear images. The Super Spectra coating minimizes flare and ghosting, enhancing contrast and color accuracy. Its micro Ultrasonic Motor ensures fast, precise, and quiet autofocus with full-time manual focus capability. This lens, while perfect for full-frame Canon EF-mount DSLRs, can also be used on APS-C models, offering an 80mm equivalent focal length. The bright f/1.4 aperture aids in controlling depth of field, making it ideal for focusing techniques that isolate subjects. The eight-blade rounded diaphragm produces a smooth bokeh, enhancing shallow depth of field and selective focus. Included in the package are the Canon EF 50mm f/1.4 USM Lens, Canon E-58 II 58mm Lens Cap, Canon Lens Dust Cap E (Rear Lens Cap), and a limited 1-year warranty.