the barrel on my lens seems to slightly tighten when i am drawing it in - - when i am zooming in the barrel towards the last few mm before i get to 17mm suddenly gets very tight and its all of a sudden that this happens. i dont have this happening on any of my other lenses.
just wanted to see if this was normal.
also the motor on the lens is very nosiy when focusing. lens is a few months old and i am the 2nd owner.