This EF 50mm f/1.4 USM Lens from Canon is a standard length lens featuring superb quality and portability, a terrific choice for both casual and professional photographers. Standard focal length 50mm lens is effective in a multitude of shooting situations and ideal for day-to-day shooting. Its f/1.4 maximum aperture makes it very effective in low light situations and able to provide shallow depth of field focus.
Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference. As a result, the lens obtains crisp images with little flare even at the maximum aperture. And as a bonus, this lens is the only lens in the EF system to offer an extra-small Micro Ultra Sonic Motor (USM) while still enabling fast, smooth and silent autofocus action and full-time manual focus override allows for the precision of manual focus even in One Shot AF mode. Other features include a close focusing distance of 1.5 feet, a 58mm filter size, and a one-year warranty.