 "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)
 "EF 50mm f/1.8 II"@en "Canon EF II | Canon Online Store"@en
"Standard & Medium Telephoto Lens"@en 
 Focal Length & Maximum Aperture 50mm 1:1.8 Lens Construction 6 elements in 5 groups Diagonal Angle of View 46° Focus Adjustment Overall linear extension system with Micromotor Closest Focusing Distance 0.45m / 1.5 ft. Filter Size 52mm Max. Diameter x Length, Weight 2.7" x 1.6", 4.6 oz. / 68.2 x 41.0mm, 130g