This is my review of the Canon EF-S 18-200mm is lens. I have never used this lens before and so fare I have not had any problems with it yet. The lens was announced back in 2008 and was supposed to compete with the nikon DX 18-200 VR. Here are the specs of the lens 18-200mm f/3.5-5.6 so it is not the fastest lens out there. the lens has 16 elements in 12 groups, including UD-glass and aspherical lenses. 72mm filter size and weighs in at 595g. I have only taken a few shots with this lens on my 7d mark ii and the AF is a little slow. I did not buy this lens, I rented it. I am going to shoot some portraits in the next few days with this lens and I will post some shots.