----- Original Message -----
From: "eckinator" <eckina...@gmail.com>
The 2nd 16-50 is now my always on, mainly because I like the lens but
also forums say if you want to be sure your sdm motor is ok, use the
lens often, both to provoke the next failure and in case it needs a
regular workout. I've also read people state their belief that this
whole thing is a misalignment issue at the coupling of screwdrive and
sdm. Please take the latter as hearsay.
Ecke--is this for just the 16-50? Or is this advice for the 50-135mm as
well? Cheers, Christine
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