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

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Do yourself a favor and buy a used one for 400 bucks and start shooting with it. Of course, it is not the best l lens it obviously has aberrations, fringing, slightly soft corners and distortion but all of that can be fixed in post and that little time in lightroom saves you 500 dollars and this is better than your 18-55mm kit too. Get a tripod point it up to the sky put it to infinity: 30s; f/4; ISO 3200-6400 (Depends on your light pollution levels); 2 Second timer for pictures of the stars. Photos shot on Canon 80d APSC camera

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As a professional landscape photographer this lens is exceptional. No chromatic aboration, no distortion, sharp, and a joy to use. The range with a full-size sensor is perfect for landscapes and interiors. I use this lens 95% of the time, it stays on my camera. I have attached a few examples I have taken with this lens.

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Bought this almost a month ago and I finally used it last week Saturday for one of my photoshoots, and I am just in LOVE with these lenses. Its sharp, its clear...my photos turned out beautiful and it needed little editing! See more at www.facebook.com/hochingphotography

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This is simply one of Canons best lenses ever made. Its just does not have the hoopla of lenses like the 70-200mm, but as good as that is for telephoto, this is superb for wide angle. For the price. Yes, you can get faster lenses, but on a full frame this a as wide as you will need for just about anything, on a crop sensor you want to buy the Canon 10mm-22mm EF-S lens. This is good on a crop camera, and will work, on one, just wont be as wide. No Image Stabilization is OK. Wide angle lenses are much more forgiving with handheld shots in bright light, and in dark, you just get a good tripod, which every photographer should already have. This lens rules. Sharp images, corner to corner.

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I bought Canon 6D camera for our real estate shootings, and did not want to spend much on the lens and ordered another brand with very good reviews. But I had to return it after not being able to get rid of the black circle on wide angle shootings. I picked Canon EF 17-40mm after searching and reading reviews, and made the right decision, Besides not having any problem, I also have a major quality improvements on my shootings.

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The 17-40 gets mixed reviews for the most part mainly due to poor corner and edge resolution wide open. I use this on the 5D Mark III, a full frame sensor that will show these soft edges much more than a crop sensor such as any rebel, 7D, 60D, etc... Even then, I find the edge performance really quite good once you stop the lens down. Central sharpness is very, very good at 17mm and 40mm wide open. Stopped down to f/8 or f/11 will greatly increase sharpness in the edges and corners of the frame. But the lens is plenty sharp, no worries here. I use some of Canons sharpest offerings such as the 24-70 f/2.8 II, 70-200 II, 135L, 400L, etc... This lens is just as good... Sure, it has some flaws, but the pros greatly outweigh those soft edges wide open. To me, this really is a full-frame lens where you can really utilize that great 17mm perspective. I think there are better options for those shooting with the 1.6x APS-C sensors. But that really is really up to the users and the needs they have. My girlfriend often borrows this lens to use with her T2i and loves it (I think the images look fantastic, as well!). One thing I love most about this lens is the contrast and color rendition. Simply beautiful images straight out of camera. The build quality is top notch as well, the zoom and focus rings are very smooth and well damped. The lens is weather sealed, but does require a filter (per-Canon) to complete the sealing. I give this lens 5/5 stars, simply due to its extremely affordable price (for an L lens) and excellent performance. Sure, there are sharper lenses out there, but that does not hinder this one at all. It still performs great and is a blast to use for dramatic perspectives. One of the most fun lenses to mount to the camera IMO. The light weight, great build quality and very good IQ make this a winner and a spot in my collection.

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Most photographers who consider themselves serious amateurs and probably almost all professionals will have at least occasional need for an ultrawide lens. Interiors, architectural exteriors, and some travel scenes are best recorded by a lens whose angle of acceptance approaches or exceeds 100 degrees. If you like and want to produce images in which large foreground objects play against smaller objects in the background while all remain in sharp focus, an ultrawide lens is a necessity. Some may also be surprised to hear that the ultrawide lens can produce interesting portraits when the goal is not just to show the individual, but rather to set a person in a context and let the environment become part of the portrait. For decades the usual focal length for such a lens has been 17mm, though of course even wider lenses, including those which do not attempt rectilinear correction, are available for special purpose image capture. This lens is an ultrawide zoom that pretty much covers the entire wide-angle range that most photographers will need -- extremely wide at the low end and just below normal at the upper. Its advantages include its utility as an all-purpose wide angle lens (capture range from slightly wide to ultrawide) and its relatively low price for a complicated semi-specialty lens. At f/4 it is not a fast lens, and as has been pointed out in other reviews it suffers from slight softness at some apertures. It is one of Canons L (red ring) lenses, which are higher-end products, and one can trust the company to have minimized the negative issues that can emerge in complex lens designs. If you feel the need for a perfectly satisfactory wide-angle zoom or primary lens, but dont want to break the bank to get the best one, this is a good lens to consider. On the other hand, if you want a faster lens with a bit more lateral grasp, Canon also offers the 16-35mm f/2.8 zoom lens (also in the red ring/L class) at about twice the price of this one. The more expensive lens offers not only what the 17-40mm zoom does (though it does not go quite as close to a normal focal length on the high end), but provides in addition extra light capture for lower-light environments and the slightly wider angle of acceptance. If I had thought a little longer about the differences between the two lenses, I would have ordered the more expensive one. I may upgrade at some point in the future if I ever feel constrained in the use of the one I did buy. But I am not dissatisfied with this lens and have no qualms giving it the five-star rating it deserves in its own right. It is a solid and reliable tool, well made, and provides excellent images.

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This is by far one of my favorite lens kits Ive purchased on Amazon. The 50mm prime lens is fantastic for taking portraits and the 17-40mm lens has a wide variety of uses - even some cinematography. Both lenses are intended for a full frame camera and should be used as such.

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Ahhh, this was my very first L lens... I loved her so much. It was also the first lens I bought when I upgraded to a full frame camera and wow did it blow me away... built like a tank, weather sealed, internal focus, quick and accurate AF, and simply gorgeous color and contrast. And affordable! As it turns out I started shooting more and more portraiture and then weddings so I started using it less and less. I eventually sold it to fund a 24-70L (regretted that) which I then sold to get a 24-105L (awesome move!). Like I said, I loved this lens but I just found that I dont need ultra wide perspective for my line of work. I have occasionally borrowed a 16-35L from a friend but truth be told, I think the 17-40 is a little sharper and the extra f/stop is kinda negligible when youre shooting at 17-24mm range and can hand hold up to 1/20 of a second anyway. If youre looking for an ultra wide angle lens, if you shoot a lot of landscapes or real estate, if you shoot editorial or commercial and need to get wider than 24mm for a dramatic portrait, this is the lens for you. You wont regret buying it.

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Not the sharpest lens but it works for my needs. Use it on a tripod for landscape and it will do well. It is not a super fast lens. Dont purchase thinking that since it is an L glass your photos will be fantastic. It is a lower end L. If you cant take great shots, this lens will not change that. It is a solid L glass entry lens. It is a better lens than a basic kit lens. I have taken some very nice landscapes with it but I knew its limitations.

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