Canon EF 50mm f/1.4 USM Standard and Medium Telephoto Lens for Canon SLR Cameras, Fixed

Standard focal length 50 millimeter lens is effective in a multitude of shooting situations and ideal for day-to-day shooting

Elements/Groups: 7/6, Diaphragm: Blades 8, Filter Thread: Font 58 millimeter. Minimum focusing distance: 17.8 inch

An f/1.4 maximum aperture provides clear imaging in low light situations and shallow depth of field

Ultrasonic autofocus motor (USM) operation is fast, smooth and virtually silent

2 high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference

This large aperture standard prime lens has superior peripheral brightness even at the maximum aperture

Lens construction: 8 elements in 6 groups, Filter size: 77 millimeter

Optimized for Digital – super multi-layer coating minimizes flare and ghosting – a common problem of digital cameras

The optimum optical design and molded glass aspherical lens elements provide excellent correction for all types of aberrations, including coma aberration, resulting in superior optical performance

The Hypersonic Motor (HSM) ensures silent, high speed auto-focusing as well as full time manual focusing capability