Canon 17-40mm f4L USM

Canon 17-40mm f4L USM

  • UV Filter
  • Lens Caps
  • Lens Pouch

  • Superb optical performance throughout the zoom range.
  • Fastest AF speed within its class (same as the EF16-35 f/2.8L USM)
  • Highly dust and moisture resistant
  • 28cm minimum focusing distance at all focal lengths

Angle of view (horzntl, vertl, diagnl) 93 degrees - 49 degrees 20', 70 degrees 30' - 34 degrees, 104 degrees - 57 degrees 30'
   
Lens construction (elements/groups) 12/9
No. of diaphragm blades 7
Minimum aperture 22
Closest focusing distance(m) 0.28
Maximum magnification (x) 0.24 (at 35mm)
AF actuator USM (1)
Filter diameter (mm) 77
Max. diameter x length (mm) 83.5 x 96.8
Weight (g) 500
Magnification - Extension Tube EF12 II 0.83 - 0.32
Magnification - Extension Tube EF25 II 1.02 - 0.70 (1)
Lens hood EW-83E
Soft case LP1319
G.F.Holder III (hood III*) NC
G.F.Holder IV (hood IV*) (0)
AF actuator (1) Mechanical full-time manual focusing built-in
Magnification - Extension Tube EF25 II (1) Only compatible at tele
  *Maximum number of Hood III/IV attachable. In case of zoom lenses, the maximum number applies to the short focal length