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EF 17-40mm f/4L USM view 1 EF 17-40mm f/4L USM view 2

EF 17-40mm f/4L USM

Ultra-Wide Zoom Lens

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  • Overview
  • Features
  • Specifications
  • Customer Reviews
  • What's in the Box

Overview

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.

Sample Image

 

Features

  • Focal Length & Maximum Aperture: 17 - 40mm; 1:4
  • Lens Construction: 12 elements in 9 groups
  • Closest Focusing Distance: 0.28m / 0.9 ft.
  • Filter Size: 77mm
  • Weather resistant similar to other high-end L-series lenses

Main Unit Spec

Focal Length & Maximum Aperture17 - 40mm; 1:4
Lens Construction12 elements in 9 groups
Diagonal Angle of View104° - 57° 30'
Focus AdjustmentInner focusing system with USM
Closest Focusing Distance0.28m / 0.9 ft.
Zoom SystemRotating type
Filter Size77mm
Max. Diameter x Length, Weight3.3" x 3.8", 1.1 lb. / 83.5 x 96.8mm, 500g
  • EF 17-40mm f/4L USM Lens
  • Lens Hood EW-83E
  • Lens Case LP1319
  • Exclusive Inst. Book
  • One Year Limited Warranty Card

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Lens Case LP1319

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Was: $45.00
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Offer valid August 3, 2014 12:00 a.m. through August 30, 2014 11:59 p.m. ET. Offer valid in U.S.A. only, and void where prohibited, taxed or restricted. Availability of certain items may be limited. Limit of ten of any one item per order, subject to availability. Order will be shipped to a street address in the 50 United States or the District of Columbia only. Dealers, distributors and other resellers are not eligible for this offer. Offer subject to Canon Online Store Terms of Sale.