 "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 
 "EF 20mm f/2.8 USM"@en "Canon EF USM | Canon Online Store"@en
"Wide-Angle Lens"@en 
 Focal Length & Maximum Aperture 20mm 1:2.8 Lens Construction 11 elements in 9 groups Diagonal Angle of View 94° Focus Adjustment Rear focusing system with USM Closest Focusing Distance 0.25m / 0.8 ft. Filter Size 72mm Max. Diameter x Length, Weight 3.1" x 2.8", 14.3 oz. / 77.5 x 70.6mm, 405g