Yeah, and I keep wishing they'd come up with a non-extending mid-range zoom. IDK why the extension bothers me... I guess it's just a build quality feel thing, which I know has no logical reasoning. It is a common reason for my 17-55 to stay in the bag though.
Weather sealing was always my concern. I know they claim that many of the extendable lenses are sealed, but it still strikes me as a pretty major opportunity for water to enter with that much surface area moving around.






















