Canon EF 17-40mm f/4L USM Lens

Canon EF 17-40mm f/4L USM Lens


Canon EF 17-40mm f/4L USM Lens

B&H # CA17404LEF MFR # 8806A002 Imported
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Product Highlights

  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • One Super Ultra-Low Dispersion Element
  • Three Aspherical Element
  • Super Spectra Coating
  • Ring-Type Ultrasonic Motor AF System
  • Weather-Sealed Construction
  • Rounded 7-Blade Diaphragm
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Canon EF 17-40mm f/4L USM Overview

  • 1Description

Spanning a versatile wide-angle range, the EF 17-40mm f/4L USM Lens is a Canon L-series zoom featuring a constant f/4 maximum aperture along with a sophisticated optical design and durable construction. One Super UD element is featured, along with three aspherical elements, which help to reduce both chromatic and spherical aberrations in order to realize high sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast in difficult lighting conditions. Complementing the imaging capabilities, this wide-angle zoom also features a ring-type USM and internal focusing mechanism to afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying environmental conditions.

Wide-angle zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 27.2-64mm equivalent focal length range.
Constant f/4 maximum aperture maintains consistent illumination throughout the zoom range.
One Super Ultra-Low Dispersion glass element noticeably reduces color fringing and chromatic aberrations for high clarity and color fidelity.
Three aspherical elements minimize spherical aberrations and distortions for improved sharpness and accurate rendering.
Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
A ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
Rounded seven-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.
In addition to the front 77mm filter ring, this lens also has a rear filter holder for up to three cut gel filters.
In the Box
Canon EF 17-40mm f/4L USM Lens
  • E-77 II 77mm Lens Cap
  • Lens Dust Cap E (Rear)
  • EW-83E Lens Hood
  • Lens Case LP1319
  • Limited 1-Year B&H Warranty
  • Table of Contents
    • 1Description

    Canon EF 17-40mm f/4L USM Specs

    Focal Length 17 to 40mm
    Maximum Aperture f/4
    Minimum Aperture f/22
    Lens Mount Canon EF
    Format Compatibility Full-Frame
    Angle of View 104 to 57 30'
    Maximum Magnification 0.24x
    Minimum Focus Distance 11.02" / 28 cm
    Optical Design 12 Elements in 9 Groups
    Diaphragm Blades 7, Rounded
    Focus Type Autofocus
    Image Stabilization None
    Filter Size 77 mm (Front)
    Gel Filter (Rear)
    Dimensions ( x L) 3.29 x 3.81" / 83.57 x 96.77 mm
    Weight 1.1 lb / 500 g
    Packaging Info
    Package Weight 1.67 lb
    Box Dimensions (LxWxH) 7.1 x 5.4 x 5.4"

    Canon EF 17-40mm f/4L USM Reviews

    EF 17-40mm f/4L USM Lens is rated 4.7 out of 5 by 1071.
    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 Great lens at a great price I use this lens as an all-purpose lens, since I have an APS-C body (equivalent FoV of 25.2-64mm). It is very light, so makes a perfect walk-around lens. This is my first L-series lens and it feels great! It feels solid, the zoom and focus rings move very smoothly. The autofocus is fast and accurate and the image quality is great. Images are sharp and, at least on a cropped APS-C sensor, show little vignetting. The only thing I don't like about it is the lens hood: it is very wide and short, so in addition to be of dubious use, it is not straightforward to store the lens with it on reverse (I have to remove it and store it separately).
    Date published: 2015-03-05
    Rated 5 out of 5 by from You Will Not Regret The 17-40L The 17-40L lens is an amazing lens to own. Don't just think landscapes, portraits, action photography...this lens allows you to get right up in the mix. The contrast and colors produced by this lens are perfect. Throw on a circular polorizer or neutral density filter and you'll find yourself shooting outdoors for hours. Combined with a decent body (7D) for example, F4 should not be an issue. AF is quick, lens is light and feels nice in your hands and well weighted in comparison to the camera body. What else can I say.....oh ya it's affordable. P.S. - Take a look at the Canon 85mm 1.8 if you haven't's a great kept secret!!!!
    Date published: 2011-07-28
    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 so useful! you are probably deciding between this and the pricier 16-35mm 2.8... my advice. save your money and buy this little beauty! when you are shooting ultra wide angle, you rarely need f/2.8 anyway because you generally want everything in focus in a wide shot... so why pay for more light and less length??? this is the most affordable L lens and easily one of the best. sharp all the way through the aperture range... at 17mm its wide enough for fun, creative distortion... and at 40mm its long enough for whatever else you might want an ultra wide for. if you are worried about vignetting or CA, get over it... all lenses vignette at a point. just tweak it in post production :)
    Date published: 2013-08-13
    Rated 5 out of 5 by from color is key! the 17-40 is arguably one of the best zooms you can buy as a canon user. yes, the 16-35 is 2.8, but it's also a grand more expensive. not quite sure if that's worth it to me yet. my favorite parts about this lens are the sharpness (especially above 5.6!) and the eyepopping color/contrast mix. i shoot with a 40D, and the 1.6x crop turns the wide end of 17mm into about a 24mm, which is surprisingly wider than i thought it would be. pllllllenty wide for all sorts of uses. built like a tank! remember to get a slim UV filter though, or you might run into some more vignetting.
    Date published: 2009-04-21
    Rated 5 out of 5 by from Doesn't leave my 5D MKII I bought this lens at the B&H store in NY and used it to shoot city shots for the rest of the day and evening. Since then I have shot portraits, a wedding, and much of DC with the lens. When wide open there is a bit of fish eye, but none more than should be expected. Softness hasn't been a big issue. As long as you can crank up the ISO non flash wedding shots are still an option. I wish the lens was faster, but for the price and great focal range I don't have a real complaint. I shoot with this on my 5D and the 24-105 on my 30D, which gives me wonderful coverage. After a week, I strongly believe I made a great investment in the lens.
    Date published: 2010-11-18
    Rated 4 out of 5 by from Good value and performance I used this lens for 4 years on my full frame bodies. I did hundreds of photo shoots with it and found that was well made and focused fast. The only down side I found with this lens was edge sharpness at 17mm on full frame bodies. It definitely was a bit soft wide open and got better as you stopped down. I now have the new 16-35mm f2.8 and find this lens is sharper around the corners. Sometimes the 17-40mm would have a tough time focusing in low light. For the money, I think it is a good value. If you can afford the 16-35mm, you will find it to be a bit sharper at the wider angle settings.
    Date published: 2009-06-20
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    The canon site states this lens can be used with the extender 1.4x and 2.0x is this correct?Pete
    Asked by: Anonymous
    Teleconverters are not compatible with lenses with a focal length wider than 70mm, including the Canon EF 17-40mm f/4L. The Canon website specifies that this lens can be used with extenders, meaning extension tubes. Those extension tubes are the Extension Tube EF 12 II and the EF 25 II:
    Answered by: Heather S.
    Date published: 2018-08-27


    I have a canon 60d and in the future would like to upgrade to a fullframe camera. Would an Canon Extension Tube EF 25 II benefit me to get the wide angle lens ?
    Asked by: Anonymous
    The Extension Tube EF 25 II is designed for lenses of 50mm and above, it will not work with this lens which is a 17-40mm. That being said it is a great wide angle lens that you can use on your 60d now and it is also compatible with Full Frame Canon Cameras like the 5D Mark IV and 6D for when you upgrade in the future.
    Answered by: Joseph P.
    Date published: 2018-08-27


    I have a canon 6D with the kit lens 24-105mm F/4L lens. Is this EF17-40 F/4L make a lot of difference in image quality as well as wide angle coverage and depth of field for just the 7MM difference. I do a lot of travel and landscape photos.
    Asked by: Anonymous
    Aside from the difference in focal lengths, the 17-40mm f/4L will give you a closer minimum focusing distance than the 24-105mm will. However, the 24-105mm features image stabilization, whereas the 17-40mm does not. Both of these lenses are great choices for landscape and travel photography, as they both feature wide angle and standard focal lengths, as well as a constant f/4 aperture. The 24-105mm may give you more versatility if you want a lens that has more range on the telephoto end, however, if you are shooting primarily wider shots, the 17-40mm is excellent.
    Answered by: Heather S.
    Date published: 2018-12-31

    Do I need a mount adaptor for the EF 7-40mm to be ...

    Do I need a mount adaptor for the EF 7-40mm to be used with Canon RP? Would it make the lens 17-40 longer and bulker?
    Asked by: long
    The excellent Canon 17-40mm (I have had one for years) is made for cameras with a mirror box. It must have that same distance on any camera otherwise it will not be able to focus to infinity. So if you chop off the mirror, in order to maintain that distance, you have to add it back in the form of an adapter. The advantage is you get use your present lenses. The disadvantage is you do add bulk to the camera/lens combination. However, when you can, sell the 17-40mm and get a native R mount lens.
    Answered by: Dennis A
    Date published: 2019-04-15

    Is this a good zoom lens for a Canon Rebel t5i ...

    Is this a good zoom lens for a Canon Rebel t5i camera shooting in limited light like an auditorium or in a movie theater without a flash where the lights have been dimmed?
    Asked by: Bradford
    I would recommend purchasing the brightest lens possible for your stated usage needs. Of the options we carry with a similar focal length and compatible for use on the Canon EOS Digital Rebel T5 DSLR camera, I would recommend the Sigma 18-35mm f/1.8 DC HSM Art Lens for Canon EF, B&H # SI183518DCC, for your usage needs. The constant f/1.8 aperture is 2.3 f-stops brighter than the f/4 aperture used on the Canon EF 17-40mm f/4L USM Lens. As an example, if your shooting conditions require you to have an exposure of f/4 at 1/13 sec. to get a properly exposed image, and there is a chance you can get blurred images due to a slow shutter speed, the Sigma lens would give you the ability to shoot an equivalent exposure of f/1.8 at 1/60 sec., which is much faster to hand-hold this lens at any of its focal lengths with minimum blur from hand movement. You may further use a higher ISO setting to assist in obtaining an exposure with a shutter speed fast enough for your specific lighting conditions. However, do note that the lighting conditions you list above are extreme, so you may need a higher-than-normal ISO setting, and which is why the brighter Sigma 18-35mm f/1.8 DC HSM Art Lens for Canon EF would be a better option for your indicated usage needs.
    Answered by: Manzell
    Date published: 2019-05-01


    How is this lens compared to the Canon EF 16-35mm f/4L IS USM Lens? Also considering that it is cheaper?
    Asked by: Florian N.
    It is older, but still a very good option for a wide angle zoom. It is also lighter and smaller too.
    Answered by: Jacob C.
    Date published: 2019-05-24

    Is this a good zoom lens for shooting in limited ...

    Is this a good zoom lens for shooting in limited light, such as an auditorium or in a theater without a flash?
    Asked by: Bradford
    Not bad, f2.8 would be better at a much higher price, if your camera does well with high ISO settings you will be OK. It is a judgement call
    Answered by: Terry
    Date published: 2019-05-28


    Will I be able to use a filter on the lens ?
    Asked by: Anonymous
    Yes you can use Filters in this lens.
    Answered by: pedro n.
    Date published: 2018-08-27
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    Canon EF 17-40mm f/4L USM Q&A

    Canon EF 17-40mm f/4L USM Accessories

    Designed For Use With:

    • ARRI ALEXA Mini EF-Mount
    • Blackmagic Design Production 4K EF-Mount
    • Blackmagic Design URSA 4.6K EF-Mount
    • Blackmagic Design URSA 4K EF-Mount
    • Blackmagic Design URSA Mini 4.6K EF-Mount
    • Blackmagic Design URSA Mini 4K EF-Mount
    • Blackmagic Design URSA Mini Pro 4.6K EF-Mount
    • Blackmagic Design URSA Mini Pro 4.6K G2 EF-Mount
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    • Canon EOS 1D X
    • Canon EOS 1D X Mark II
    • Canon EOS 40D
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    • Canon EOS 5D Mark IV
    • Canon EOS 5DS
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    • Canon EOS 6D
    • Canon EOS 6D Mark II
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    • Canon EOS 7D Mark II
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    • Canon EOS C100 EF-Mount
    • Canon EOS C100 Mark II EF-Mount
    • Canon EOS C200 EF-Mount
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    • Canon EOS C500 EF-Mount
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    • Canon EOS Rebel SL1
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    • Canon EOS Rebel SL3
    • Canon EOS Rebel T5
    • Canon EOS Rebel T5i
    • Canon EOS Rebel T6
    • Canon EOS Rebel T6i
    • Canon EOS Rebel T6s
    • Canon EOS Rebel T7
    • Canon EOS Rebel T7i
    • Panasonic AU-EVA1 EF-Mount
    • Panasonic VariCam LT EF-Mount
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