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12-05-2011, 09:57 PM   #1
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Join Date: Dec 2006
Location: Charlotte, NC
Posts: 200
50-135 SDM problem I think -- help

So bah....
I thought I got away with it forever. I have 50-135mm over 1.5 years now and it has been great.

The other day I went outside and I was switching from my prime to it and it wouldn't focus on my k20d. I had to unmount and remount 2-3 times before it did.

Today.. I mount it on my k-5. It wouldn't focus -- realize that I had the switch on lens to MF (duh) i switch it to auto. It still didn't focus.. After 3-4 remount, I went and clean the contact (never done this on any of my lens before) and it still didn't work. I was kinda sad, but after a few more half press shuttle, it come back to work and I shoot for the next hour with no issue.

Is this a sign that SDM about to go out :\?

Thanks,

12-05-2011, 10:24 PM   #2
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Join Date: Nov 2009
Posts: 4,571
Probably, unfortunately.
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