>A rattle is not normal. Sounds like you have a screw loose > - the lens I mean. This kind of problem is not uncommon, >but it needs to be fixed. > >If you bought the lens new, repair should be handled under >warranty. The kicker is insuring the lens during shipping. > > >Eric Bowles >Nikonians Team >My Gallery >Workshops > >Nikonians membership — my most important photographic >investment, after the camera
Thank you for your response.
I took the lens into my local camera shop. They diagnosed it as a "loose element", and described it as a common problem. The element (maybe more than one?) is held in place with a threaded retaining ring.
I left it with them for CLA, including tightening the offending retaining ring.
I hope they are right. I'll know "the first week in December".
BTW, I bought the lens used, locally. Perhaps carrying the lens in the car created vibration which loosened the ring. I'm reasonably sure I did not hear the rattle when I used it in March.