Clearly distinguished by its bright maximum aperture, the Canon EF 50mm f/1.2L USM is a normal-length L-series prime also sporting a robust physical design and advanced optical layout. The impressively fast f/1.2 maximum aperture affords a great degree of control over depth of field for isolating subjects and producing desirable selective focus effects. Complementing these qualities is a sophisticated optical composition, which includes one aspherical element to suppress spherical aberrations in order to achieve notable sharpness and clarity. A Super Spectra coating has also been applied to limit flare and ghosting and promote greater contrast and color accuracy in a variety of lighting conditions. Complementing the imaging attributes, a ring-type USM is employed to deliver quick and quiet autofocus performance along with full-time manual focus control.

Normal-length prime is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides an 80mm equivalent focal length.
Exceptionally bright f/1.2 maximum aperture affords extensive control over depth of field for selective focus applications and also benefits working in low-light situations.
One aspherical element helps to suppress spherical aberrations and distortion for a high degree of sharpness and accurate rendering.
Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
A ring-type Ultrasonic Motor (USM), along with optimized focusing algorithms and a high-speed CPU, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
Rounded eight-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.