Canon EF 50mm USM Lens - F/1.4

■ Micro USM ■ Full-time manual focus This 50mm standard lens with an F/1.4 maximum aperture is designed for Canon SLR cameras. Two high-index lens elements and Gaussian optics help eliminate astigmatism. It delivers clear images with little flare at maximum aperture. It features full-time manual focusing with an ultra-compact Micro USM focus adjustment. It measures 2.9 inches in diameter and 2 inches long, and comes with a one-year warranty. Two high-index lens elements and a new Gaussian optics eliminate astigmatism and suppress astigmatism. This 50mm F/1.4 standard lens is a great choice for both casual and professional photographers. The lens features two high-index lens elements and a new Gaussian optics that combine to eliminate astigmatism and suppress astigmatism.