Specifications:

Brand Canon
Focal Length 50mm
Maximum Aperture f/1.8
Minimum Aperture f/22
Lens Mount Canon EF
Lens Format Coverage Full-Frame
Angle of View 46°
Minimum Focus Distance 13.78″ / 35 cm
Maximum Magnification 0.21x
Optical Design 6 Elements in 5 Groups
Diaphragm Blades 7, Rounded
Focus Type Autofocus
Image Stabilization No
Filter Size 49 mm (Front)
Dimensions (ø x L) 2.72 x 1.54″ / 69.2 x 39.2 mm
Weight 5.64 oz / 160 g
Package Weight 0.595 lb
Box Dimensions (LxWxH) 4.3 x 4.3 x 4.3″

Features:

Super Spectra and Air Sphere Coatings have been applied to individual elements to control lens flare and ghosting for greater contrast and color fidelity when working in strong lighting conditions.

An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to five shutter speed stops to better enable working in low-light conditions and with slower shutter speeds.

standard single-shot mode, a panning-optimized mode, and a mode that only activates the Image Stabilizer during the exposure.

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.

Customizable electronic focusing ring provides three sensitivity levels for how quickly and precisely the lens can manually focus.

Focus Preset function is available to quickly recall a programmed focusing position.

Rounded nine-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 and also features a fluorine coating on the front and rear elements to guard against water spots, smudges, or oil residue.

Removable rotating tripod collar is included and benefits working with the lens atop a tripod or monopod.

Compatible with optional EF 1.4X and EF 2X teleconverters.