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01-30-2010, 10:20 AM   #1
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DA* 16-50mm f2.8 - What's next?

I bought this lens used which was barely a month old, from someone who got it directly from Pentax as a replacement for another broken 16-50 that he originally purchased from B&H.

When the SDM stopped working, I sent it into Pentax Service Center in AZ after chatting with a Pentax representative online. I provided copies of the original invoice (previous owner and B&H), a letter from Pentax to the previous owner stating they were replacing the original lens, and a letter from me to Pentax explaining how the SDM was not working along with my contact information.

The lens reached its destination by USPS several days ago.

Since I'd never done this before, wondering as to what happens next, and in about how long?

01-30-2010, 10:31 AM   #2
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You will most likely get another replacement copy. There is no guarantee that it will be brand new though. I got mine replaced for another replaced copy. So far, knock on wood, it is holding up. You would want to make sure it is still functioning properly before warranty expires.
01-30-2010, 02:40 PM   #3
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They will likely replace the SDM motors. Took them 2 - 3 weeks on my 16-50, but part of that time they were waiting on parts from Japan. If you call Pentax or CRIS, you should be able to get a number that helps you to monitor the progress and expected completion time.
01-31-2010, 03:40 AM   #4
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QuoteOriginally posted by Rondec Quote
They will likely replace the SDM motors. Took them 2 - 3 weeks on my 16-50, but part of that time they were waiting on parts from Japan. If you call Pentax or CRIS, you should be able to get a number that helps you to monitor the progress and expected completion time.
With a new type of motor, or the same that failed?

I find thats the most interesting thing about failing SDM: What are they doing about it?

01-31-2010, 09:51 PM   #5
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I have a 16-50 as well, although the SDM hasn't shown any signs of failing yet... hmm..

Please keep this thread updated :P
02-01-2010, 07:31 AM   #6
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Ideally I'd like Pentax to replace or fix just the SDM, as the optics on my copy are excellent and photos have turned out very sharp even wide open.

I have no clue what they'll do, if anything. So far no communication but its been only a week. I will definitely update this thread as soon as there is any news.
02-08-2010, 04:55 PM   #7
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DA* 16-50mm f2.8 repaired and returned.

Lo and behold, the lens showed up with a replaced motor, just like how I preferred it!

Today is exactly the 14th day since I shipped the lens out. A few shots have come out great, hopefully it will keep working silently for a while!

Interestingly though, Pentax Service Center calls its motor HSM.




Last edited by EsBee; 02-08-2010 at 06:14 PM.
02-08-2010, 08:37 PM   #8
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QuoteOriginally posted by the swede Quote
With a new type of motor, or the same that failed?

I find thats the most interesting thing about failing SDM: What are they doing about it?
I assume it is the same type of motor. No idea if there is something to keep it from failing again. Mine has been going for about four and a half months now without a problem, but who knows when and if it could start acting up again.

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