Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
12-03-2013, 02:16 PM   #1

Join Date: Jan 2011
Location: New York
Posts: 3,310
16-50 SDM concerns

I purchased a DA* 16-50 from B&H on Black Friday. I have reason to believe it was manufactured before Pentax/Ricoh made a significant engineering design fix to the SDM focusing motor. Please see for more details.

I'm open to other suggestions from you, but I'll propose coming into the store for a swap with a more recently manufactured sample. Apparently the only way to identify the approximate age of a 16-50 is by the serial number , and maybe some "Ricoh" paperwork or a label on the box. Can you find your highest-numbered 16-50 serial number, reserve it for me, and let me know what the serial number is so I can research whether it's newly manufactured?

-John Speroni

12-09-2013, 05:45 PM   #2

Join Date: Jan 2011
Location: New York
Posts: 3,310
Original Poster
B&H, please respond, even if only to say you are thinking about it. If you can't respond publicly a PM, email, or phone call would be appreciated.
12-15-2013, 08:54 AM   #3
B&H Photo Specialist
Chuck-B&H's Avatar

Join Date: May 2010
Location: New York
Posts: 867

Firstly. I am terribly sorry for the delay in responding to your post, the E-mail alerts do not appear to be working correctly. According to what I've read: "all lenses produced in 2012 or later should no longer fail."

Read more at: Pentax Engineer on SDM Failure and Pentax DC - Photokina 2012 -

While I am unable to look up the manufacture date for your particular lens, I doubt very much we've had inventory sitting here since 2012, the lens just sell too quickly. Pentax could more than likely confirm whether or not you lens has the updated SDM focus motor. Of course, if you are not happy with your lens, you have our 30 day return period, please contact our Customer Service Dept to set up an RMA.

C h u c k C a p r i o l a
Live Chat and E-Mail Sales Manager B&H Photo-Video

Thank you, we appreciate your business.
*** Peace on Earth ***


  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
DA* 16-50 SDM problems... MikeH Pentax SLR Lens Discussion 29 02-05-2014 09:29 PM
DA star 16-50 SDM polur101 Pentax DSLR Discussion 13 09-09-2013 11:20 PM
Da* 16-50 - zoom ring concerns mgroves27 Pentax SLR Lens Discussion 9 08-18-2012 02:17 PM
Failing SDM? Re: 16-50 DA* Kryscendo Pentax SLR Lens Discussion 6 07-09-2012 12:01 PM
Lens offer from Amazon: DA* 50-135 SDM & DA* 16-50 SDM f8 Pentax SLR Lens Discussion 4 03-25-2008 04:45 AM

All times are GMT -7. The time now is 09:03 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]