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Canon EF 17-40 mm f/4.0 L USM Lens

4.6 out of 5 stars 74 customer reviews
| 14 answered questions

RRP: £939.99
Price: £498.00 & FREE Delivery in the UK. Details
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  • Maximum Aperture: F/4.0
  • Minimum Focus Range: 28 cm
  • Focus Adjustment: Ultrasonic Motor (USM) Automatic, Manual
  • Filter Size: 77 mm
  • 12-month Manufacturer's Warranty

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Frequently Bought Together

  • Canon EF 17-40 mm f/4.0 L USM Lens
  • +
  • Hoya 77mm Pro-1 Digital UV Screw in Filter
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  • 77mm HOYA PRO1 Digital Filter Circular Polarizer PL DMC Filter
Total price: £577.47
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Canon EF 17-40 mm f/4.0 L USM Lens
Customer Rating 4 out of 5 stars (74) 5 out of 5 stars (152) 4 out of 5 stars (135) 4 out of 5 stars (40)
Price £498.00 £93.86 £619.00 £1,060.00
Delivery FREE Delivery FREE Delivery FREE Delivery FREE Delivery
Sold by Amazon.co.uk CobbleHill Electronicsonly4u Amazon.co.uk
Dimensions 8.4 cm x 9.7 cm x 8.4 cm 3.9 cm x 6.9 cm x 3.9 cm 5.1 cm x 15.2 cm x 5.1 cm 1 cm x 1 cm x 1 cm
Item Weight 499 g 159 g 200 g 640 g
Model Year 2005 2015 2006 2007
Mounting Canonbayonet Canon EF / EF-S Canonbayonet Canonbayonet
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Product details

  • Product Dimensions: 9.7 x 8.4 x 8.4 cm ; 499 g
  • Boxed-product Weight: 549 g
  • Item model number: 8806A007AA
  • ASIN: B0000C4GAM
  • Date first available at Amazon.co.uk: 1 Jan. 2001
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (74 customer reviews)
  • Amazon Bestsellers Rank:

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Product Description

Product Description


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 analog 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 i

Box Contains

  • 1 x Canon EF17-40mm f/4.0L USM Zoom Lens


    From the Manufacturer

    EF 17-40mm f/4L USM EF 16-35mm f/4L IS USM EF 16-35mm f/2.8L II USM EF 14mm f/2.8L II USM EF 24mm f/1.4L II USM
    EF 17-40mm f/4L USM EF 16-35mm f/4L IS USM EF 16-35mm f/2.8L II USM EF 14mm f/2.8L II USM EF 24mm f/1.4L II USM
    Image Stabiliser No Yes No No No
    Focusing motor USM USM USM USM USM
    Weight 500 g 615 g 640 g 645 g 650 g
    Size (width x height) 83.5 x 96.8 mm 82.6 x 112.8 mm 88.5 x 111.6 mm 80 x 94 mm 93.5 x 86.9 mm
    Aperture f/4 f/4 f/2.8 f/2.8 f/1.4
    APS-C camera bodies only No No No No No
    L-series Yes Yes Yes Yes Yes
    Step-up Image Stabiliser for steadier shots Wider f/2.8 aperture - more control over depth of field and higher performance in low light Huge 114˚ field of view Extremely wide f/1.4 aperture for extreme low light conditions and narrow depth of field control

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    Customer Questions & Answers

    Customer Reviews

    Top Customer Reviews

    I cannot recommend this lens enough... for wide angle landscape and travel photography this lens is superb. I have used this lens for several years on a Canon 5D and previously a Canon 300D and Canon 300 film and have always found the results to be superb. For cropped sensor cameras this is going to be circa 28-70mm so pretty good as a general purpose lens and perhaps good for portrait photography.

    It sits within Canon's f4 series of L series lens (and is thus half the price of its big brother 16-35 L lens)... for me given that it is most likely you will be using this lens for landscapes and thus want lots of depth of field I'm not sure the f2.8 premium is justified (even for portraits unless you are a serious professional f4 should be fine). The colour saturation seems that much deeper with this lens than the equivalent consumer lens (eg. 28-135), the build is solid (as would be expected of an L series lens) yet being wide angle and containing less glass this is not that much more expensive than Canon's prosumer range of lenses (eg. the 28-135).

    For wildlife photography I find this to be a particularly complimentary lens to the big zoom lens (eg. a Sigma 50-500) so you only need to travel with two lenses. The weight is not too bad (it's the lightest L series lens) and the focussing is fast. There is no image stabiliser but at this focal length that's not an issue. Only thing to be wary of is putting filter systems on the front of the lens... it's 77mm at the front so be careful with eg. Cokin P filter systems as you may get vignetting on a full size sensor camera (not an issue for the cropped sensors as far as I know).
    Comment 96 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    If you need a wide angle lens with superb build quality, weather resistance, great optics, superb colour and little distortion then buy this one.

    I shoot a lot of landscapes, sometimes in harsh conditions like the English Lake district or French Alps, and need kit which will stand up to the abuse I give it. If I'm shooting landscapes then 99% of the time I reach for this lens, and if I'm climbing this is the only one I take. What more do I need to say?

    I have also used this for group shots at weddings with great results (just ask the Bride!)

    It's not light (but not really heavy as it's pretty simple with no IS), and not cheap by general standards (but cheap for an L series), but it does the job and does it very, very well.

    I have noticed a little distortion at the very edges when close to the subject, but this is only to be expected at 17mm and for anyone with a crop sensor it probably won't be seen (I use a full-frame 5D). Other than that I have nothing but praise for this lens, and will get another (or it's direct replacement) if I ever kill or lose this one.
    2 Comments 92 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Verified Purchase
    I pretty much exclusively shoot landscape shots on a Canon 5D Mk II and had previously used a 24-105mm L f/4. Now, the 24-105 is an excellent all-round lens, but at 24mm it has massive barrel distortion - this is well known - so I usually have to correct this distortion if there's any kind of straight-line horizon in shot, which obviously affect the quality of the pixels even with the most sophisticated lens correction software. This hasn't really bothered me that much except on a few shots which I'd really have liked the crispness to have been retained at source instead of using faux sharpness with the sharpness filter.

    So, when I got this lens I did so specifically to use it at the 20-24mm range, not the 17mm side of things (as zoom lenses often perform at their best when in the middle of their range). I did some extensive tests when I got it and can categorically state that at around 21mm there is practically ZERO distortion. In fact between 20-24mm distortion is negligible, and certainly not anything I'd have to correct (Yey!), but at 21mm it's just sublime as far as distortion goes.

    The 2nd surprise was how much sharper this lens is than the 24-105. I did side-by-side comparisons of some complex textures and this lens simply blows the 24-105 out of the water at around 24mm, especially at the sweet-spot of f/11, although it's still very usable at f/16, and certainly better than the 24-105 at the same apertures.

    Now, for my needs (which is quite specific in that I will only use this lens at around 24mm) it is a superb lens which I would find difficult to match even in a prime, and as I always use apertures of f/11 or smaller for my landscape work, the fact that it's an f/4 lens is of no odds to me.
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    Comment 9 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    If you are reading this then you know that this is one of the most useful zoom L lens and probably one of the cheapest L quality lens out there. If you have a crop body (which I did start with) it is a truly remarkable walk-around lens which would occupy serious time on my 450D. Its that good!

    It has plenty of uses. Landscape and street photography is where this baby truly shines (on a fullframe 5d mk ii) I would normally stop this down to f8-f11 (sweet spot) and just shoot away. It is sharp! You'd be surprised in terms of sharpness even comparing with few of my primes (85mm 1.2L mkii and 100mm 2.8L IS)

    There are times I wished that this is slightly faster for indoor photography (a bit slow at f4 aperture) but then again it can do preety much everything else. Grab the flash and problems solved.

    The focusing speed is blindingly fast. Accurate without need for micro adjustment. Built like a tank and can take few serious knocks. Mine has! Phew! It is something I can't say about the 85mm 1.2L ii which would give me palpitations everytime it gets some time on the 5D (amazing lens though).

    Its a great beginner lens too especially if you are like me, start small and then get sucked in into the world of photography. In no time at all you'll have a FF (full frame) with few quality L lenses. Not to mention down by few thousands euros! Ouch!

    Enjoy snapping and don't tell me I didn't warn you.
    1 Comment 63 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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