Excerpt: This lens replaces an old 28-80 I've had forever. I use it on a 5D Mark II. I took it out for a test run on a waterfall/wildflower hike yesterday. The day was partly sunny, and I was in a heavily wooded area for most of the hike.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Rugged, Strong Construction, Very Quiet Auto-focus
Summary: Optically this lens did not meet my expectation. For an L lens this is a disappointment however I still gave it 3 stars because it is useful if you want lightweight set up for shooting outdoor.
WARNING -- COMES WITH YOUR OWN SCRATCH/CRACK INSIDE THE GLASS.
3 weeks ago
Summary: I think they are selling defective items. I bought this to take on a trip and admit I didn't expect well when I got it. As soon as I started taking pictures, I noticed there was a spot on all my shots.
Summary: Great lens. If only they made the 24-70 for the same price...if you can't afford that and you want a good cinema/shooting lens I would highly recommend this one. Came with information to register lens on Canons website, arrived quickly.
Excerpt: I like this lens so much that I ordered a new one even before sending my original for repairs. After 3 years usage, the zoom on my original lens started sticking. Sometimes it wouldn't zoom at all and sometimes it would only zoom partially.