EF 17-40 f/4L USM
An 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.
*Offer valid from Friday March 31, 2017 through Thursday June 29, 2017 11:59 PM EST, or while supplies last, whichever occurs first. Offer valid in Canada 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. Price does not include tax which must be paid by the customer. Order will be shipped to a street address in Canada only. Dealers, distributors and other resellers are not eligible for this offer. Offer subject to Canon eStore Terms of Sale.