 "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." 
 "Canon EF 70-300mm f/4-5.6 L IS USM Zoom Lens"@en
"Canon EF 70-300mm f/4-5.6 L IS USM Zoom Lens"@en 
 Lens Mount: Canon EOS Focal Length: 70-300mm Maximum Aperture: f/4-5.6 Minimum Aperture: f/32-45 Diagonal Angle of View: 34° - 8° 15' Maximum Magnification: 0.21x Minimum Focus Distance: 3.9 ft. (1.2m) Lens Construction: 19 elements / 14 groups (2UD ultra-low dispersion glass elements) Diaphragm Blades: 8 (circular aperture) Focus Type: Auto/ Manual Filter Size: 67mm Dimensions (Diam. x Length): 3.5 x 5.6 in. (89 x 143mm) Weight: 2.31 lbs. (1050g)