Excerpt: After months of research, I purchased my first L series lens, the Canon 70-200f/4L IS USM. This lens has incredible, fast autofocus and produces super sharp, crisp photo's. At half the weight of the f .8 and hundreds of dollars more in my pocket, I can't see how anyone would go wrong with this lens.
Summary: Image is excellent at all focals starting from f4. Close up image (at MFD) is very good, except at 135-200mm on my copy. For this situation I use only 70-100mm. The slipping focus is history now after free service.
Pros: excelent IQ, light weight, very good IS and finally but not the last excellent IQ :)))
Cons: the hood could be better, slipping focus but after service it's ok
Excerpt: Is versatile for closeups as well as distance photos. I used it to take a closeup of a blossom just across a small creek that I couldn't wade through and the lens produced a great close up shot with deep color, clarity, and just right blur in the background.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Strong Construction
Summary: Read all the reviews before committing to buy and was not disappointed, the IS all canon claim and the IQ beyond reproach. WOW this is one great lens..... to me well worth the premium over the older non IS version. Used with a 5d mk111 and f4 no real handicap even when used for sport/ low light.
Excerpt: On a Canon 60D, this lens is amazing. Built like a tank, it feels very well made. It is very nicely made as the zoom is inside the housing. Great as it does not extend the lens. I have used it for outdoor / action /sports / landscape shots and it has been unbelievable.
Pros: Consistent Output, Durable, Fast / accurate auto-focus, Strong Construction
Excerpt: I have the 70-200mm f/2.8IS II USM also and I almost sold this lens when I got that one. But man am I glad I didn't. The 2.8 is a monster in size and weight. It's a beautiful lens, of course, but for most portrait work in a studio or on location, you'll find that shooting at f4 works perfectly well...
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction