Upgraded from Canon's 17-40 L and the difference in image quality improvement is really noticeable. Images are pin sharp right into the corners even wide open. The IS is handy for low light too. Got some superb night shots of New York with this lens.

Great lens in its class, fast delivery home, very well, I fell in love with this lens, it is very wide, sharp, nice colors, fast AF and the rest. There is one problem canon did not update and my camera does not recognize the lens, i can not make jpeg shots, canon camera 5dm3

Consistent Output; Durable; Easily Interchangeable; Lightweight; Quick Focus; Rugged; Sharp Focus; Strong Construction

I bought this lens for a photo-trip to Horseshoe Bend in Page, Arizona. The lens did a great job, even at the extremes of the zoom range. Buying through Crutchfield was a pleasant experience, they kept me up-to-date on my order the whole way through.

great sharpness throughout; has wide focus and zoom rings

does not seem as durable as other Canon "L" glass

"When I bought my 6D a year and a half ago, it comes with the 24-105mm lens. For a while I was content with it. However there were times when I'm shooting my clients backyard projects, or interior and exterior scenes when I can get wide enough.

Pros - Ultra-wide angle - Great image quality throughout the image - Includes IS - Great price for what you get Cons - f4, but expected given the price - Minor barrel distortion, but totally acceptable given the wide angle - Physically a bit larger than I would have liked, but is acceptable

Abbe paglagayo keya? price se 1 lakh kam kar, jo maan me aya likh diya

For the first few days I was dissapointed but later i have realised this is much better for shooting flats than the Zeiss 18 3.5 ZE i had before. It's great for wide angle shoots and ok for portraits at 35mm but I wish Canon would just make lens like Zeiss 15mm 2.8 for the price of the 16-35 4 IS

Versatile, IS is a killer good, distorsion in not bad; Sharpness is not too bad in corners

I guess it's sharper than other canon wide zooms but not as close as sharp as Zeiss 21mm 2.8 ZE; Out of focus part seem a bit weird as if they are result of camera shake

Image quality is fantastic and is fairly easy to operate though is a bit bulky. i now need to review my own technical skills.

Bulky

Hey AllAlways I used to go with my Great Combo 5dm3 with 70-200 ii which is always giving me the "WOW" pictures.But for long time I was not happy with wide angle focal length with 24-105/24-70 2.8 ii/16-35 2.8Then later I bought this lens after seeing the paper configuration and it blows me away :...

Sharp

Distortion 16mm

I converted to L series lenses a few years back and was blown away by the quality of the images and the lens build quality. Having said that, my budget doesn't stretch to the f28 lenses. The f4 lenses are on my radar and im very happy with the results.