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

BH #CA17404LEF • MFR #8806A002
Canon EF 17-40mm f/4L USM Lens
Key Features
  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • One Super Ultra-Low Dispersion Element
  • Three Aspherical Element
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.
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Canon EF 17-40mm f/4L USM Overview

By B&H Photo's

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.
UPC: 013803028058

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

Focal Length17 to 40mm
Maximum Aperturef/4
Minimum Aperturef/22
Lens MountCanon EF
Lens Format CoverageFull-Frame
Angle of View104° to 57° 30'
Minimum Focus Distance11.02" / 28 cm
Maximum Magnification0.24x
Optical Design12 Elements in 9 Groups
Diaphragm Blades7, Rounded
Focus TypeAutofocus
Image StabilizationNo
Filter Size77 mm (Front)
Gel Filter (Rear)
Dimensions (ø x L)3.29 x 3.81" / 83.57 x 96.77 mm
Length at Maximum Extension3.82" / 97 mm
Weight1.1 lb / 500 g
Packaging Info
Package Weight1.7 lb
Box Dimensions (LxWxH)7.1 x 5.4 x 5.4"

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

Great Lens

By Mary
Rated 5 out of 5
Date: 2022-06-07

I have only used this lens a couple time since my purchase but so far I am very happy with it. Nice sharp photos!

It's staying in my camera bag!

By Anonymous
Rated 5 out of 5
Date: 2022-02-15

Wonderful lens for event photography. I recently did an outdoor event and this lens was the perfect lens for my all day shoot. I am so happy I finally pulled the trigger and purchased it.

Great lens

By Ryan
Rated 5 out of 5
Date: 2022-01-28

I haven't used it too much yet but love it so far for landscape and city scape photography. Good quality lens and very versatile.

By Jim Laurent
Rated 5 out of 5
Date: 2022-01-13

Used his lens on several real estate shoots, it’s been a great addition to my kit and my new primary lens for Real Estate.

A long desire

By Kevin
Rated 5 out of 5
Date: 2021-12-31

I have been wanting this lens for years. Always waiting for the timing and the great B&H sale price to coincide. I got it and it's an absolute joy to use.

Nice lens for your Canon cameras

By Eno
Rated 5 out of 5
Date: 2021-12-24

Good quality and small lens for your camera. Just fits perfect on your Canon cameras and perfect image. Perfect price for this type of lens.

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

By Quewanncoii
Rated 5 out of 5
Date: 2022-05-25

Perfect lens for the work I have to do. My clients love the image it produces.

Awesome!!!

By Mike
Rated 5 out of 5
Date: 2022-04-27

Awesome!!!

See any errors on this page? Let us know

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question

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 http://bhpho.to/VMSt9k and the EF 25 II: http://bhpho.to/1tyEhgB
Answered by: Heather S.
Date published: 2018-08-27

Can it be use on Canon EOS R5 ?

Can it be use on Canon EOS R5 ?
Asked by: Hanh
A Canon Mount Adapter EF-EOS R, BH # CAMAEFRF will allow this EF 17-40mm f/4L USM Lens to function with the Canon EOS R5. https://bhpho.to/300yC91
Answered by: Kirk
Date published: 2022-05-06

question

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

question

Would this lens work with a Mitakon Zhongyi turbo II lens adapter attached to a Blackmagic pocket cinema camera? Can I control the focus, and the aperture? Thanks.
Asked by: Pedro M.
It appears that the Mitakon Zhongyi turbo II lens adapter is a manual adapter, which means there would be no electronic communication between the lens and the camera. You would not be able to adjust the lenss aperture, and you would need to focus manually.
Answered by: Christina S.
Date published: 2018-08-27

question

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: 2020-11-25

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: 2021-07-27

question

Will this lens work on the t6i camera?
Asked by: Anonymous
This lens will be compatible with the Canon T6I.
Answered by: Dana G.
Date published: 2018-08-27

I have the cropped sensor canon 77d, and Im not ...

I have the cropped sensor canon 77d, and Im not sure which L series lens to choose from for landscape photography? planning on using it at Yosemite and more.
Asked by: Kyle
The Canon EF 17-40mm f/4L USM Lens listed above is not much wider than the Canon EF-S 18-55mm f/4-5.6 IS STM Lens or the Canon EF-S 18-135mm f/3.5-5.6 IS USM Lens originally included as kit lenses with the purchase of the Canon EOS 77D DSLR Camera. If you are specifically looking for an L-series lens for landscape photography and need the lens wider than your current lens, I would recommend the Canon EF 11-24mm f/4L USM Lens B&H # CA11244LUSM, for your usage needs. If you need a more economically-priced lens option, while it is not a Canon L-series lens, the Sigma 12-24mm f/4 DG HSM Art Lens for Canon EF, B&H # SI12244C, would also be a good full-frame lens option compatible for use on the Canon EOS 77D DSLR camera.
Answered by: Manzell
Date published: 2020-09-18
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