I purchased this lens as a replacement for the 18-55mm kit lens that came with my T3i. I was looking for a good "walkaround" lens, and this fit the bill perfectly! The lens feels very solid..

This lens has definitely made a difference in my ability to capture tack sharp images while being handheld. Love the focal range and the minimum focusing distance is adequate for most flower photography that is not micro.

Consistent Output; Easily Interchangeable; Fast / accurate auto-focus; Nice Bokeh; Strong Construction

This is an amazing lens! Absolutely love it. Using as a "walk about " lens and love the extra at the wide angle end from my previous 18mm. Quick to focus and photos are clear, sharp,& colors vibrant. As close to an "L" lens you can get.

Consistent Output; Easily Interchangeable; Fast / accurate auto-focus; Nice Bokeh; Strong Construction

A great lens. I bought this as a carry-around lens for general use on my EOS 550D. It easily outperforms the kit lenses, has a very handy range from quite wide to slightly zoomed, and is excellent in low light.

I purchased the T3i with the standard 18-55 mm lens. After using the kit lens, it was decided that a higher quality lens was needed. Purchased the 15-85 mm and the difference is like night and day.

"If this lens had a constant aperture it would be about as perfect as a zoom can get for my uses. (I shoot a lot of climbing, i.e. environmental portraiture.) This is my favorite zoom lens. It covers an excellent focal length range, and the 24 mm equivalent wide end is my favorite part!

I bought this lens to replace the kit lens that came with my camera. It provides consistently sharp images. It focuses quietly and quickly. While it is somewhat heavy, it is well worth the trade off for the images it captures.

Consistent Output; Fast / accurate auto-focus; Strong Construction

Heavy

Developed to fit the requirements of advanced amateurs, this new standard lens is an excellent all-round performer, featuring high-grade external finishings. Its 5.7x zoom range (24-135mm equivalent in 35mm format) covers wide angle to telephoto, and a host of high-end features that deliver great...

I have a 50D and had been using a 28-135IS Lens. I thought my pictures looked great but I needed a lens that could go wider so I choose the 18-85. Picture look great so far (had less than a week).

Used this lens and zoom telephoto as our only 2 lenses during a recent trip to Maui. Did well for me and the wide angle shots look great!

Consistent Output; Easily Interchangeable