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Canon EF wide-angle zoom lens 17-40mm

Mfg. Part: 8806A002 | CDW Part: 473700 | UNSPSC: 45121603
$856.84Advertised Price
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  • Wide-angle zoom lens
  • 17 mm
  • 40 mm
  • f/4.0 L USM
  • Canon EF
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Product Overview
Main Features
  • Wide-angle zoom lens
  • 17 mm
  • 40 mm
  • f/4.0 L USM
  • Canon EF
77mm filter diameter The EF17-40mm f/4L USM is an ultra wide angle Canon EF zoom lens meant for professional and high amateur SLR EOS camera users.

While it is an excellent lens when used with an analogue SLR camera, the EF17-40mm f/4L USM is especially well suited for digital SLR cameras with an imaging sensor size smaller than the 35mm format. Indeed on such digital SLR cameras these focal lengths can give an angle of view approximately equivalent to that of a 28-70mm lens used on a 35mm camera, which makes it the ideal standard zoom lens.

The EF17-40mm f/4L USM has 12 lens elements arranged in 9 groups. Super Spectra Coating on the elements ensures excellent color balance and minimizes ghosting and flare. To provide superb image quality over a 17-40mm zoom range the lens uses three aspheric elements of two different types, while Super UD (Ultra-low Dispersion) glass is used to prevent the chromatic aberrations that often can degrade the subject edge clarity.

Minimum focusing distance is just 28mm throughout the entire zoom range. The Auto-focus works silently and quickly thanks to a fast central processing unit with an improved AF algorithm. You can override AF mode with manual focus should you wish. Controlled by an electromagnetic diaphragm, the EF17-40mm f/4L USM's circular aperture can achieve a more attractive appearance to out of focus background areas in a picture. The front of the lens does not rotate as you focus. This means, for example, that polarizing filters still function effectively as you zoom in and out. At the rear of the lens there's a drop-in gelatin filter holder. Highly resistant to moisture and dust, the EF17-40mm f/4L USM is ideally suited for use in harsh environments. Environment friendly lead-free glass is used throughout its construction.
Technical Specifications
Specifications are provided by the manufacturer. Refer to the manufacturer for an explanation of the print speed and other ratings.
Brand: Canon
Manufacturer: Canon
Packaged Quantity: 1
Product Line: Canon EF

Lens System
Diaphragm Blades: 7
Element Qty: 12
Features: Aspherical lens , Full-time manual focusing , Internal focusing system , Rear filter mount , Rear focusing system , UD glass , Ultrasonic Motor (USM)
Filter Size: 77 mm
Focus Adjustment: Automatic , Manual
Group Qty: 9
Intended For: Digital SLR
Lens Aperture: F/4.0
Max Focal Length: 40 mm
Max View Angle: 104 degrees
Min Focal Length: 17 mm
Min Focus Distance: 11 in
Min View Angle: 57.5 degrees
Optical Zoom: 2.4
Series: L USM
Special Functions: Wide angle , Zoom
System Type: Lens
Type: Wide-angle zoom lens
Zoom Adjustment: Manual

Lens System Mounting
Mounting Type: Canon EF

Included Accessories: dust cap , lens cap

Optical System
Lens Coating: Super Spectra coating
Magnification: 0.24

Dimensions & Weight
Diameter: 3.3 in
Length: 3.8 in
Weight: 17.64 oz

Miscellaneous (CDW)
Compatible With:
Canon EOS 1000D
Canon EOS 1D
Canon EOS 1D Mark II
Canon EOS 1D Mark II N
Canon EOS 1D Mark III
Canon EOS 1D Mark IV
Canon EOS 1Ds
Canon EOS 1Ds Mark II
Canon EOS 1Ds Mark III
Canon EOS 20D
Canon EOS 20Da
Canon EOS 300D
Canon EOS 30D
Canon EOS 350D
Canon EOS 400D
Canon EOS 40D
Canon EOS 450D
Canon EOS 500D
Canon EOS 50D
Canon EOS 5D
Canon EOS 5D Mark II
Canon EOS 7D
Canon EOS Digital Rebel
Canon EOS Digital Rebel XT
Canon EOS Digital Rebel XTi
Canon EOS Kiss Digital
Canon EOS Kiss Digital N
Canon EOS Kiss Digital X
Canon EOS Kiss F
Canon EOS Kiss X2
Canon EOS Kiss X3
Canon EOS Rebel T1i
Canon EOS Rebel XS
Canon EOS Rebel XSi

Product Reviews
Canon EF wide-angle zoom lens 17-40mm is rated 4.6 out of 5 by 57.
Rated 5 out of 5 by from Outstanding This is one of the better lens from Canon. Like any other lens, you have to know the features and limits. It works wonderful.
Date published: 2017-10-01
Rated 4 out of 5 by from Great ultra wide angle lens Just received the lens yesterday and took it out and shot some landscape photo's. I shot in jpeg and RAW and the pictures turned out great. The lens was attached to my 6D MII. Being the lens has been on the market for a very long time it still holds it's own. Yes there are some down sides to the lens and you can see vidoe's about the lens on YouTub. But the lens was within my budget and does what I want it to do.
Date published: 2017-08-24
Rated 5 out of 5 by from Great value for the buck! Was looking for a used 16-35 mm zoom for shooting landscapes and came across this lens. It may not be as fast but it is as sharp and just as reliable. Depending on your needs, this is an excellent lens either as your go-to lens or as a back-up.
Date published: 2016-09-27
Rated 5 out of 5 by from Razor sharp shots, fast auto focus This is an outstanding workhorse lens. Images come out crystal clear, and the build is everything you expect from an "L" series lens. I couldn't be happier with it.
Date published: 2016-03-05
Rated 5 out of 5 by from Fantastic Little Lens Love this lens. I needed a higher quality wide angle lens that the kit EF-S lens that came with my Crop camera as I knew I was going to go FF eventually.The kit was slow to focus and the images were just not that sharp.Once I put the 17-40 L on my cam body I knew I had the right lens. It has great image quality and focuses extremely quickly. The L build quality has stood up to one accidental drop with absolutely no issues aftwards.My only issue is the not great aperture of F4. I knew that going in and expected it, but one more stop would have made this the perfect lens. For the price, you just can not beat it.
Date published: 2014-07-10
Rated 5 out of 5 by from Affordable high quality landscape lens I have owned this for 2 years now and I have loved every second of it. It was my first L series lens and was my only lens for a while. You just can't beat the quality at the price point. Focusing is silent and fast, build quality is great. It is a little soft wide open in the corners, but that is expected with an ultra wide lens. It can easily still be used wide open without loss of image quality. The distortion is well controlled and what remains can be corrected easily in LR. I think it has the perfect amount of distortion that can either be used as an advantage or corrected. One of the things that attracted me to the lens was the weight or how light it is. When you hike in the woods every ounce counts. Comparing it to the 16-35 it is significantly lighter. The close focusing distance has made the f/4 max aperture a non issues outdoors with depth of field. The extra stop could be helpful for wedding or indoor shooting. If you are doing outdoor shooting and want ultra wide angle this is a great lens.
Date published: 2014-06-03
Rated 5 out of 5 by from great price, great lens I have carried this lens for little over a year now, using it mainly for real estate photography and landscapes. For this purpose, there was no need to opt for the 16-35 f/2.8, which is double the price. The lens is also great for party shots, when you need to get a big group in the picture. Although there is some distortion, thats what you get at 17mm, with any lens. Between the weight, price, build, and sharpness, this is one of the best "L" lenses that Canon makes. I would suggest this lens to anyone interested in landscape photography, or simply want a wide angle to add to their kit. In my opinion, f/4 is plenty on an ultra wide angle.
Date published: 2014-01-23
Rated 5 out of 5 by from Lord Of Land Scapes This lens is sharp from front to back and is one of the sharpest in its class, its the only super wide I have used for years and still is my go to lens for the shot. The quality is well build and weather sealed. It never looked faded or used, flare is under controlled F4 is very sharp and can be used as a macro lens as well, great for portraits. You will not be disappointed with this lens.
Date published: 2013-11-23
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1/20/2018 9:20:29 AM
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