Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens

17-40mm ultra-wide-angle zoom lens with f/4 maximum aperture, 3 aspherical lens elements and super UD glass element create superior optics in all conditions, Powerful ring-type ultra-sonic monitor (USM) produces fast and silent autofocusing, Focuses as close as 11 inches; supports screw-in 77mm filters or up to 3 gel filters, Weather-resistant construction
Out of stock
Available in USA Only
LENS $649.99

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Canon EF 17-40mm f/4L USM Lens

The Canon EF 17-40mm ultra-wide-angle zoom lens that's ideal for both film and digital SLRs. Superior optics are assured by the use of three Aspherical lens elements, in addition to a Super UD (Ultra-low Dispersion) glass element. Optical coatings are optimized for use with digital cameras. This lens focuses as close as 11 inches (0.28m), and offers both Canon's full-time manual focus and a powerful ring-type USM for fast and silent AF. It has a constant f/4 maximum aperture, and offers the choice of screw-in 77mm filters or a holder in the rear of the lens for up to three gel filters. Finally, it offers weather-resistant construction similar to other high-end L-series lenses.

  • EF Mount L-Series Lens.
  • Aperture Range: f/4-22.
  • Three Aspherical Elements, One Super UD.
  • Ultrasonic Autofocus Motor.
  • Manual Focus Override.
  • Water and Dust Resistant.
  • Internal Zooming and Focusing.
  • Truly Circular Diaphragm.
  • Focal Length & Max. Aperture: 17-40mm 1:4.
  • Lens Construction: 12 elements in 9 groups.
  • Diagonal Angle of View: 104°-57° 30'.
  • Focus Adjustment: Inner focusing system with USM.
  • Closest Focusing Distance: 0.28m / 0.9 ft.
  • Zoom System: Rotating type.
  • Filter Size: 77mm.
  • Max. Diameter x Length: 3.3" x 3.8"/ 83.5 x 96.8mm
  • Weight: 1.1 lb./500g.
  • The Canon EF 17-40mm f/4L USM Lens is compatible with all Canon SLR/DSLR cameras.

    Canon Products purchased from authorized Canon dealers are covered under the 1 year limited warranty by Canon U.S.A., Inc. in the United States or Canon Canada Inc., in Canada when purchased and used in the United States or Canada. This Limited Warranty is only effective upon presentation of a warranty card and proof of purchase. Products are warranted against defects in materials and workmanship only. Your warranty period begins the day you purchase your Canon camera, lens and/or flash and runs for a period of one year total from that date.

    Your 100% satisfaction is our responsibility and concern. Buy with confidence!

    Authorized Canon Dealer.

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    Item model number: CN0029