Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras: Customer Reviews & Product Details

I'm sure this would give you a lot more performance on a better body (I have a XSi). It provides wide-angle- you can go into a room and capture wall to wall with not too big of a problem. 17-40mm is a good range to get landscapes and then the occasional portrait. Night shots are amazing with a tripod, I was stunned.

The bad:
Not great with portraits if you want a lot of bokeh. I had fun zooming out and taking self portraits with friends or objects in the background but when you want to really focus on the subject, you won't get extreme bokeh.

Overall, you are paying ~40% less than any other L lense and let's face it, that L is worth a lot. I use this mainly but I am upgrading to the 24-135mm 3.5-5.6, I miss the upper range (used to have a 70-300). I would say this lense would rock for HDR- something geared toward landscape shots, but portraits, macro, not that useful.

This is an excellent wide angle walkaround lens. It is very sharp, with excellent build quality. The lens comes with a pouch and a lens hood. It has been great so far for my shooting needs, groups of friends and travel-landscape. It is used on a Canon 30D. Service from Amazon was great.

Great lens, and a must buy for those needing a wide angle lens. I own a 50D, & it works great with this lens. I'm able to finally get shots indoors(in my home in places where I can't back up any further because of walls.) that I wasn't able to before . I don't have any issues with weight or any other.Focuses fast & quietly. It comes with a lens pouch & hood. Plus it's an "L' lens, so you get quality build & optics. I'm glad I bought this lens.

This is about 10-25mm for 40D and others. It's well build, very light, definitely L quality in color, contrast, and consistency.Corner to corner sharpness is not great. But Canon isn't known for wide angle lenses anyway. This is quite decent comparing to the rest of what's available for Canon mount. My Sigma 20/1.8 is fantastic. The next up is the Canon 14mmL which cost an arm and a leg. But this 17-40 is better made and has a little zoom hence more flexibility. In both ends of shooting (ultra wide and extreme long), you don't always get room to make up for the lack of zoom.

This lens is great with an Xsi, D50, and a lot of fun with a Ds1 Mark III. For most of my pro career I shot with either Hasselblads or 8x10 view cameras and this lens will generate equal or better images. This lens, like the rest of my red stripers is worth every penny. Good lenses are usually top dollar but worth it when you deliver the images. I have used this lens a lot since getting it mostly for close in available light indoor sports and it has done just an excellent job. Its fast focusing abilities are amazing. Want some samples...use this url http://tedconnolly.smugmug.com/ or http://www.62644.com