Excerpt: This lens has been a life saver on more than one occasion. It allows me to get a lot closer to my subject than my other lenses, which is necessary for some of my shoots. The bokeh is nice and the stabilization is great to have as well. It's one of my favorite lenses.
Summary: From my own extensive research of the worldwide web, I fully expected this lens to be somewhat inferior to its 35mm f2 similarly image stabilised sibling, which in fairness would have been far easier to construct. But the difference is significant and whereas the 35mm lens stands out as a class apart from typical universal zoom standard, to be honest this wide-angled model does not.
Pros: Fairly lightweight and compact; near silent, precise autofocus; attractive colours; extremely effective image stabilisation; low distortion
Cons: Lens hood is essential but not provided; adequate sharpness but not outstanding
Summary: Super sharp, small, and with IS!!! This lens is great for so many purposes. I used it on a crop sensor Canon Rebel camera, and it was plenty wide enough for most uses. I'm not a fan of ultra-wide perspective, and for me, this focal length is just about as wide as I'd ever want to go (in most situations). Great walk-around lens for travel, street photography, etc. Nothing bad to say about this lens. The build quality is excellent.
Excerpt: This is a nice walk-around lens, but it was giving a bit too much distortion, mainly due to the wide angle. So I returned it. But it's a nice lens to have in the bag for a day out, or for hiking, etc … when you want to lighten your load, but still want to take some quality photos.
Summary: I adore this little lens. As others have already stated, it's sharp and renders colors beautifully. I've had the opportunity to use it in a few weddings, maternity shoots, and corporate events - photos of venues, large groups of people, and environmental portraits were all taken with this lens. The minimum focus distance is pretty small, so you can also take some interesting up close detail shots as well, though they won't be macro lens-level of detail, of course.
Summary: I upgraded from the older Canon EF 24mm. I have informally "tested" them side by side. This newer version is sharper with better contrast and color at all apertures in all areas of the field on a full frame camera. The stabilizer is handy and focusing is quick and near silent. Thanks Canon--and Amazon! I will use this lens mostly for landscape duties at medium apertures. There is a respected lens testing website that shows this lens as good but "not tack sharp".
Excerpt: Love this lens! I often shoot Holiday events and it's great for small groups or individuals up close. Sharp, light weight, non-intrusive, and fast focus. I previously used a 50mm and 70-200 but this lens allows me to mingle in the party and still get full length photos with surrounding atmosphere, or step up close.
Pros: Fast / accurate auto-focus, Lightweight, Strong Construction