Excerpt: The lens is even better than the original 18-200mm lens from sigma with the same specks. the HSM is super quiet and the lens is lighter than previously. Picture quality is extremely good for the price. This lens has quickly become my universal lens for alround purposes. Another good and affordable product from sigma.
Pros: Consistent Output, Fast / accurate auto-focus, Lightweight
Excerpt: This has quickly become my new fav. I love to do a lot of landscape pictures but I am not always able to get close enough for the perfect capture. This give me enough zoom while still keeping the picture at whole. I ended up using this for most of our vacation.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Strong Construction
Excerpt: I have purchased a couple other lenses, one of which was a Canon, and I have to say I like the quality of the Sigma much better. This lens is a great everyday lens and will stay on my camera (drop the kit lens - finally). It's a great all-in-one if that is what you are seeking. After just getting back from a vacation and having to change between lenses frequently, I had enough. This Sigma fits the bill for me.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Rugged, Strong Construction