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04-18-2011, 06:28 AM   #1
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Has anyone used a DA* 16-50 and/or 50-135 for more than 2 years?

I'm wondering about longevity. Having read the coutnless SDM issue related discussions, I'm wondering whether the SDM failure is inevitable after a year or two, or if there are actual lenses that have lasted for several years without issues.

I have a 16-50 second hand, originally purchased mid 2010 and a new 50-135. I'm just wondering if these lenses are worth holding on to or not. Honestly, I wish there are some "happy ending" stories with the 16-50 since the sealing, size and speed of the zooms are what appeals to me with my K5. I have a nice set of limiteds for non-hazardous shooting but in most of those situations I actually prefer my Leica M.

Looking forward to hearing about your experiences.

04-18-2011, 08:58 AM   #2
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Bought the pair summer 2009, so not quite 2 years on them. But I've taken nearly 8,000 photos with the DA* 16-50 and nearly 7,500 with the DA* 50-135. Funny, the 16-50 was used more at first, but the 50-135 has become my go-to lens. It's got that little extra pixie dust.
04-18-2011, 09:15 AM   #3
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I bought both a DA* 16-50 and a 50-135 in August '09 (not quite two years ago). The 50-135 has been great, but the 16-50 has gone twice to CRIS to replace the SDM and is acting up again.

My suspicion is that some lenses are more prone to SDM failures than others (i.e. a lens that fails once is likely to fail again, possibly due to assembly tolerances / friction). For that reason I won't send my 16-50 for repair a third time. Instead, I ordered a Tokina 17-50 (due to arrive this week) to replace it.
04-18-2011, 09:59 AM   #4
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Thank you both for your comments. glad to know that some (one so far) of these are working for longer than a year without repair.

Oliver, excuse me if this is a dumb question but what is CRIS? I see them mentioned quite often on this forum.

04-18-2011, 10:09 AM   #5
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I have 50-135 since march 2009. Still working fine.
04-18-2011, 10:13 AM   #6
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Bought my DA*16-50 in march 2009 and it still works. I am planning to take it with me into the mountains this summer again with no real back up apart from manual focus if it fails. And I am sure it will fail at some point. Most things do!
04-18-2011, 10:25 AM   #7
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will receive my DA* 16-50 shortly. Hope mine will be free of trouble.
Still looking for a good price DA*50-135.

Lee
04-18-2011, 10:28 AM   #8
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I bought my 16-50 in October 2007. So far so good...


Last edited by PePe; 04-18-2011 at 01:10 PM.
04-18-2011, 11:01 AM   #9
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I've bought two used 16-50s and a used 50-135. One of the 16-50s has about a year of use, the other which I sold recently had 2 years. The 50-135 has a little over 2 years as well. SDM on all of them hasn't shown any signs of problems. Maybe I'm just lucky
04-18-2011, 11:09 AM   #10
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QuoteOriginally posted by SilentLight Quote
Oliver, excuse me if this is a dumb question but what is CRIS? I see them mentioned quite often on this forum.
Digital Camera Repair| C.R.I.S. A+ BBB Rating

It's THE authorized Pentax factory repair facility.


Use this link instead. It feels better! http://www.criscam.com/third_party_logistics_pentax.php
04-18-2011, 02:26 PM   #11
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I use my 50-135 since February 2007 till today.
Cameras are K10,K-7 and K-5.
No Problems till today,used for approx. 80000-90000 pictures.
Best regards,Andy

Last edited by zackspeed; 04-19-2011 at 02:39 PM.
04-18-2011, 02:58 PM   #12
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I bought a 50-135 in October 2008 and it has been working fine till now. DA *16-50 required servicing SDM in September of 2009 and has worked fine since then (I bought it in March of 2009).
04-18-2011, 04:36 PM   #13
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Thank you for all your posts! It's great to hear so many positive stories.

This makes me feel a little better about these lenses as long term tools. But I think I'm going to sell the 16-50 and use my primes more often. Still not sure about the 50-135. It is optically a great lens but a little bit on the bulky side.

Thanks again everyone!
04-19-2011, 02:31 AM   #14
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bought mine used from the states about 2& half years ago.

shot approx 40k images on it, have got through 3 lens hoods, survived dusty glastonbury 2010 a wet v2009. problem with forums like this is the unhappy punters outnumber the quiete happy punters. its a fantastic lens & if my sdm fails i would say 150gbp for a repair is a price worth paying
04-19-2011, 02:37 AM   #15
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I've used my DA*16-50 since august 2008.
Travelled the world with it under harsh conditions.
Over 80k pictures on K10D, K-7 and now my K-5.

No SDM issues so far... , but I had the front element replaced, it had gotten somewhat loose.

- Bert
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