Canon EF-S 18-200mm 1: 3.5-5.6 IS Lens (72mm filter thread, image stabilized) (Accessories)
I than, let's say, beginners with some background knowledge would just like to describe my personal impressions. Professional photographers, please read this review about ... I have compared the Sigma 18-250, the Tamron 18-270 PZD and the Canon 18-20