Description Short-telephoto, portrait-length prime is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 136mm 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. Floating optical system maintains clarity and sharpness throughout the focusing range. 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.
