I expect that non-essential parts may be made of high grade plastic. I doubt everything on any lens is made entirely of
metal these days. For most purposes the plastic in that location is superior than metal for the purpose. Maybe more expensive,
though probably not.


Caveman wrote:

Hmmm... wasn't this "Limited" thing supposed to be all metal and glass ? Or is it molded plastic afterall ?

Alan Chan wrote:

I have reason to believe that part is defective during the molding process because it is a plastc tube which cannot be bent. I would never expect such problem however.





--
I can understand why mankind hasn't given up war. During a war you get to drive tanks through the sides of buildings and shoot foreigners - two things that are usually frowned on during peacetime.
--P.J. O'Rourke





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