On Mar 22, 2009, at 4:53, John Whittingham wrote:
Hi Charles
That does look quite unusual, especially for a lens stopped down @ f/
5.6. I have to shoot large groups once a year for my employer. the
16-50 would be my choice of lens this year, now I'm having some
reservations.
It's been to service 3 times now... I need to to some testing to see
if it's that severe still.
And, to be fair, the first service was due to a loose screw in the
base of the barrel... the 2nd time was focus issues... and the third
time was to repair damage I did when I dropped my camera bag (I never
sent it in to "fix that awful CA").
However, with that many visits to the bench - including the rebuild of
the front of the barrel that last time - it's likely that whatever did
that isn't doing it anymore. Fingers crossed!
-Charles
--
Charles Robinson - [email protected]
Minneapolis, MN
http://charles.robinsontwins.org
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