 "Canon - EF 50mm f/1.4 USM Standard Lens Black"@en-US
"Canon EF 50mm f/1.4 USM Standard Lens: This Canon 50mm lens has an unusually large maximum aperture so you can get detailed pictures even in low light without needing a flash. It's excellent for basic portraits and scenic shots, especially at night."@en-US 
 "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." 