A great EF-S APS sized zoom lens that covers a mild wide angle to telephoto range. The 4 stops IS marketing fluff is true. It tested it down to 1/4 of a second and the images come out crisp and clean as against IS being turned off where camera shake and blur really shows.
A wonderful image range of 18-135mm (29-216mm), REAL Image Stabilization rated at 4 stops; 3 stops rating on other reviews, but hey, 3 to 4 stops is great feature, The difference between a non IS and IS on a 70-200mm white lens is over a thousand dollars.
It looks like a plain cheap cylinder, not a sexy lusty lens; It doesn't demand attention as the more sexy L and white lenses, Soft at the wide angle end, for the pixel conscious; Set to F8 and sharpness improves dramatically