Canon EF 50mm F/1.4 USM Prime Lens

Lens Type: Standard prime lens Mount: EF-mount (compatible with Canon full-frame and APS-C DSLR cameras) Focal Length: 50mm Aperture: Maximum aperture of f/1.4 Autofocus: Ultrasonic Motor (USM) for fast and quiet autofocus Minimum Focus Distance: 0.45m (1.48 ft) Construction: 8 elements in 6 groups Filter Size: 58mm Dimensions: 73.8 x 50.5mm (2.91 x 1.99 inches) Weight: 290g