 "EF 100mm f/2.8 Macro USM"@en "Canon EF USM | Canon Online Store"@en
"Macro Lens"@en 
 Focal Length & Maximum Aperture 100mm 1:2.8 Lens Construction 12 elements in 8 groups Diagonal Angle of View 24° Focus Adjustment Inner focusing system with USM Closest Focusing Distance 0.31m / 1 ft. (film plane to subject) Filter Size 58mm Max. Diameter x Length, Weight 3.1" x 4.7", 21.1 oz. / 79.0 x 119.0mm, 600g
 "Canon EF 85mm f/1.8 USM Lens"@en "Camera Lenses :: Canon Lens - Onestop Digital"@en
"<p>A highly practical medium telephoto lens with superb delineation and portability. Images are sharp and clear at all apertures. Through computer simulations the lens has been designed to give beautiful background blur. Since the front lens group does not rotate during focusing special filter effects are not affected.</p>"@en 