Excerpt: I bought this lens because Scott Kelby touted the virtues of a 28-300 mm zoom being the "all-in-one" lens because of its versatility. With hindsight, however, this is the one time I should have rented the lens or at least visually inspected it before making a purchase.
Excerpt: I use the lens mostly for professional work. The photos I take with it are very good quality. The disadvantages are that it is heavy and the zoom friction setting is not very reliable and has to be reset frequently. Overall, I believe is is a good product.
Pros: Durable, Fast / accurate auto-focus, Strong Construction
Excerpt: I am an amatuer enthusiast who lands some pro sports gigs, I used this with a 7D to photograph motocross Nationals. I bought this to use on pro gigs to replace my AF-S 18-200mm f3.5 zoom.Positives: I bought this since it promised to be an extremely versatile lens, which it definitely is.
Pros: Durable, Easily Interchangeable, Fast / accurate auto-focus, Rugged, Strong Construction
Excerpt: in particular occasion is useful to have a lens that permit you to do a portrait, or to take a landscape picture or sometimes a microcosm, with this lens i can do everything with a good quality, without to have my 25 kg photographic bag, just my camera with this lens.
Pros: Fast / accurate auto-focus, Rugged, Strong Construction
Summary: I bought this lens in April of 2008 to shoot at the St Pete Grand Prix in FL, I wanted a great all around lens so I didn't have to change lens or switch to a camera with a different lens during fast action.
Summary: Okay, it's not that I didn't believe people when they said how heavy this beast is. I just thought that maybe I'd be able to bulk up and make it work. No way. This lens is so heavy that when extended to 300mm is has some serious shake.
Conclusion: I am a professional. I shoot NFL, NHL, MLB NCAA and news as well. I REALLY wanted this lens to work. I used it on a new 7D. I tried night football, hockey and indoor basketball. All network television lighting.