I have the above lens and I am very happy with the results. The one thing I am not too sure about is the noise. Not digital noise but the noise the IS makes when it is on. Its a type of chattering and is far louder than the auto focus. Can any of you who have this lens confirm this is normal or should I look at returning it before it grinds to a halt. All the other lens I have with IS are Canon and very quite
Thanks
Thanks