GUIDE TO CAMERA LENSES

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

Manufacturer : Canon
In Stock : 15

List Price:	$799.99
The discount on this item is SO BIG that its manufacturer does not permit display of its bargain price. To find out how much you can save, ADD THIS ITEM TO CART. You can remove it later if you decide not to buy it.

Features

17-40mm ultra-wide-angle zoom lens with f/4 maximum aperture for Canon SLR cameras
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; measures 3.3 inches in diameter; 1-year warranty

Product Description

EF 17-40mm f/4L USM ultra-wide-angle zoom lens * compatible with Canon EOS SLR cameras * Canon L Series lens with three aspherical elements and one Super UD (Ultra-low Dispersion) element for superior image quality * available full-time manual focusing * weather- and dust-resistant construction * ring-type Ultrasonic Motor for fast, silent autofocus * built-in gelatin filter holder * minimum aperture: f/22 * minimum focus distance: 11 inches * constructed of 12 elements in 9 groups *

Amazon.com Product Description

Broaden your perspective with the Canon EF 17-40mm ultra-wide-angle zoom lens. Ideal for both film and digital SLR cameras, the lens offers three aspherical lens elements in addition to a Super UD (ultra-low dispersion) glass element, creating superior optics in all conditions. In addition, the lens focuses as close as 11 inches (0.28mm), and offers both Canon's full-time manual focus and a powerful ring-type ultra-sonic monitor (USM) that produces fast and silent autofocus. Other features include a constant f/4 maximum aperture, the choice of screw-in 77mm filters or a holder in the rear of the lens for up to three gel filters, and optical coatings optimized for use with digital cameras. Boasting weather-resistant construction similar to other high-end L-series cameras, the lens carries a one-year warranty.

Focal length: 17-40mm
Maximum aperture: 1:4
Lens construction: 12 elements in 9 groups
Diagonal angle of view: 104 to 57 degrees (at 30 feet)
Focus adjustment: Inner focusing system with USM
Closest focusing distance: 0.9 feet
Zoom system: Rotating type
Filter size: 77mm
Dimensions: 3.3 inches in diameter, 3.8 inches long
Weight: 1.1 pounds

Customer Reviews

Average Rating of 4.50 out of 103 reviews

Rating :
Love it - Daniel Nguyen, May 12, 2008

Got this to go with my 5d. Great lens, sharp as a tack for a wide angle zoom. Very quiet motor and fast focus for a wide zoom. Love it as a beach walk around lens.

Rating :
canon EF 71-40mm f/4l lense - Edison Hasso, Apr 21, 2008

THIS IS ONE GREAT LENS ,VERY SHARP WITH GOOD CONTRAST ,FUN TO USE AND GREAT RESULTS .I HIGHLY RECOMMEND IT .

Rating :
nice lens - Ernest E. Biggs, Apr 20, 2008

This is a nice lens. It should be for it's cost but it's an "L" so that is expected. I almost only buy "L" lens anymore because they are so good. I don't get as many as I used to but quality has it's price. I have been a Canon user for 35+ years and they are better than ever.

Rating :
The Workhorse Of My Bag - Manuel J. Pedroso, Apr 09, 2008

This lens is truly the workhorse of my camera bag. When I am out doing any kind of landscape or nature photography this lens is most of the time the lens on my camera. I have to say I have made my best photographs with this lens. I guess the 16-35 is a good lens it is a faster lens thats for sure but I rarely if ever shoot wide open when I am using wide angle lens and have never felt the need for a 2.8 apeture. For the difference in price unless there is some very specific reason I don't see why anyone would spend twice the money on a 16-35mm lens when for the half the price you can get a lens of very close or equal quality. I highly recomend this lens.

Rating :
Canon EF 17-40 L-series lens - W. Bailey, Apr 08, 2008

An incredibly sharp lens. I have used Canon lenses for years, but this is the first time I,ve ever used one of the L-series lenses. I am completely sold on these lenses, and will never buy anything but the L-series from now on.

Return to Camera Lense Guide
Return to Recommended Products