One of the finest telephoto zoom lenses in the EF line, comparable to a single focal length lens. It has four UD-glass elements to correct chromatic aberrations. Its constant f/2.8 maximum aperture and superb image quality make it one of the most popular professional SLR lenses in the world. Compatible with Extender EF 1.4x II and 2x II.
I had a 70-300 tele before purchasing this lens. In every single way it is better. No chromatic aberrations have been noticed. I normally use this telephoto lens for sports and auto racing. It's got very fast auto focus which is a must when shooting sports. The colors are much richer. So far I haven't had any complaints with it, other than the heaviness of the lens. Some days I will be out for 6-10 hours shooting sports with this lens and after a while my back starts to hurt from lugging around this lens. The price is another issue, but honestly you get what you pay for and this lens is completely worth the money.
April 19, 2013
Images are just stunning!
I wish that I had made this investment much sooner.
August 11, 2012
This lens is Fantastic,has a fast autofocus because of the f2.8, i had the 70-200mm f4, which was super fast but this one performs much better.
The built quality is fantastic, i would recommend this lens to all canon eos users who want to put Telefoto on their bags, wow!
November 17, 2011
the lens had a fast auto-focus, because of the f2,8 surely it won't need flash for indoor use. But i think it is to heavy.
May 16, 2011