Canon EF 17-40mm f/4L USM EF17-40mm F4L USM Instruction Manual - Page 11

11. Specifications Focal Length/Aperture Lens Construction 17 - 40 mm f/4 9 groups, 12 elements Minimum Aperture f/22 Angle of View Diagonal: 104° - 57° 30' Vertical: 70° 30' - 34° Horizontal: 93° - 49° 20' Min. Focusing Distance 0.28 m/0.92 ft. Max. Magnification 0.24× (at 40 mm) Field of View 234 × 365 mm - 100 × 150 mm / 9.2 × 14.4 inch - 3.9 × 5.9 inch (at 0.28 m) Filter Diameter 77 mm Max. Diameter and Length 83.5 × 96.8 mm / 3.3 × 3.8 inch Weight 475 g / 16.8 oz Hood Lens Cap EW-83E E-77U Case LP1319 • The lens length is measured from the mount surface to the front end of the lens. Add 21.5 mm when including the lens cap and dust cap. • The size and weight listed are for the lens only, except as indicated. • The EF1.4X II/EF2X II extenders cannot be used with this lens. • Aperture settings are specified on the camera. • All data listed is measured according to Canon standards. • Product specifications and appearance are subject to change without notice. ENG-10