 "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 EF 100mm f/2.8 Macro USM Lens"@en "Camera Lenses :: Canon Lens - Onestop Digital"@en
"Medium telephoto lens with a macro feature for 1x magnification. Fluctuations in spherical aberrations caused by focusing are suppressed  and high-quality images are obtained at all focusing distances. With eight aperture blades  good background blur is obtained even when the aperture is decreased by one or two stops. A focusing limiter which limits the magnification to 0.25x is built-in.  "@en 