 "Canon EF 50mm f/1.4 USM Lens"@en
"Canon EF 50mm f/1.4 USM Lens"@en 
 Lens Mount: Canon EF (EOS) Focal Length: 50mm Maximum Aperture: f/1.4 Minimum Aperture: f/22 Maximum Magnification: 0.15x Minimum Focus Distance: 1.5 ft. (45cm) Lens Construction: 7 elements / 6 groups Diaphragm Blades: 8 Focus Type: Auto / Manual Image Stabilization: None Filter Size: 58mm Dimensions (Diam. x Length): 2.9 x 2.0 in. (7.4 x 5.1cm) Weight: 10.2 oz. (290g)
 "Canon lens - 50mm" " Canon 50mm 2515A003 Camera & Camcorder Lenses CDW.com
"Canon offers this standard lens featuring superb quality and portability. Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference. Crisp images with little flare are obtained even at the maximum aperture." 