Canon EF 50mm f/1.4 USM Lens (Retail Packing)Offering a natural perspective along with a fast maximum aperture, the EF 50mm f 1. 4 USM from Canon is a versatile normal length prime characterized by its bright f 1. 4 aperture to suit working in low light conditions and for producing shallow depth of field imagery. This lens also features a Gaussian optics design, along with two high refractive index elements, to control spherical aberrations and distortion for high sharpness and clarity. A Super