Have the telephoto lens for two months already. It is a lens with a very good price-performance ratio. The feel is good. The focus ring turns to my mind a little too easy (in manual focus) The image stabilization is very good. Sometimes it focuses a little slow but the quality of the pictures is very good. Until now I could watch no distortion or chromatic aberrations. With the relatively new premium lens EX-S1650ASB and with this telephoto lens you are very well served.