My doesn't act in this manner. However, the zoom action has become a little
loose and rough after a couple of years. I think all consumer zoom lenses
will collect some dust etc through the lens barrels. Usually, this isn't a
problem. Even a new lens can have a speck or two of something in the lens.
The speck could even be in the lens elements rather than loose dirt.
Greg
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
