I have one of these as well and agree with almost everything you say. It is sometimes hard to give up on the dust pump notion but it is true that other zoom lenses are the same regardless of the method used for their zoom.
The only other point worth mentioning is that when you finish your shot and decide to move on - the loud clunk you get as the lens moves by itself because the clutch wasn't quite tight enough. Always makes me think there has to be a chipped piece of glass as a result!
|