I purchased this lens with the 5D mark iii late November of last year. Recently though I have found to realize the IS doesnt work on anything past f4. I have found this to be a problem on their newer secletion of 24-105 lenses. I love this lens, but buy an older version if possible. I'm sending mine in soon, I will edit this after I get it back.
April 9, 2013
Overall performance, nothing to ask for, as it covers almost every require range for a single All-in-One. At 24, image seems a little light and soft, mid range fm 35 -100, pretty good, especially indoors when light are sufficient, example, seminars, conference, image quality remain sharp throughout.
March 31, 2013
Love, love, love this lens!
I've had this lens for about five months now, and absolutely love it. It takes amazing pictures, with great color representation and contrast. At f/4 the background is a very pleasant blur. The build quality is great and it feels perfect on my T4i with battery grip. After purchasing my first body (T3i) with the EF-S 18-55 kit lens, I reluctantly refrained from buying a middle grade zoom such as the 18-200 or 28-135, knowing this was ultimately the lens I wanted. I am very glad I waited, it's worth every penny. Once you step up to an "L" lens you will not want to go back. I can't wait to use this in a full-frame body.
January 14, 2013
Canon ALL THE WAY
I haven't had this spectacular lens for very long and i am using it with my new 5D Mark iii but i must say i am beyond impressed now the price well all i can say is save up to get this lens because although it is somewhat steep "it is a canon and you get what you pay for" says my friend and he has made a believer out of me it focuses great it handles great and the images taken are beautiful i would give it three thumbs up if i could so canon keep up the great work!
January 2, 2013