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EF 17-40mm f/4.0L USM Lens

Part #: 8806A002
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Receive 13 months of complimentary damage protection and priority service from Canon Valid for purchases between October 11, 2015 - January 9, 2016. Click here to learn more

The Canon EF 17-40mm f/4.0L USM Lens is a new and affordable L-series 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.

About half the price of the 16-35 f/2.8 lens, this L-series lens has an entirely new optical design with three Aspherical elements and a Super UD-glass element. The combination provides superb contrast and sharpness, even at the widest settings. It's ideal for both film and digital SLRs, and features the same weather-resistant design, rear gel filter holder, and high-speed Ultrasonic Motor as the EF 16-35mm lens.

  • EF mount; ultra-wide zoom lens
  • Super Ultra-low Dispersion glass; inner focusing; aspherical lens; full-time manual focus
  • 17-40mm focal length
  • f/4.0 constant maximum aperture
  • Ring-type UltraSonic Motor (USM)

Essential Accessories

  • B+W - 77mm Multi-Coated UVA Haze #010 Filter
  • B+W - 77mm Slim-Line Multi-Coated Circular Polarizer Filter f/ Wide-Angle Lenses
  • Hoya - 77mm Circular Polarizer HMC Filter
  • Lenspen - LP-1 Lens Cleaning Brush
Lens Information
Camera Mount Canon
Focal Length 17-40mm
Aperture Range f/4.0-f/22
Minimum Focusing Distance 11 in.
Filter Size 77mm
Groups 9
Elements 72mm
Diagonal Angle Of View 104-57°
Length 3.8 in.
Maximum Diameter 3.3 in.
Weight 1.1 lbs.
  • E-77U 77mm Snap-On Lens Cap
  • Lens Dust Cap E (Rear)
  • EW-83E Lens Hood
  • Lens Case LP1319
  • 1-Year Warranty
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