50-135 2.8 motor question

pentaxk10duser · 11-24-2013, 08:24 PM

I'm looking to get the 50-135 . but I have read about motor in the lens problems. Is this a on going problem with the lens or is there a serial number or year the lens is made that they fixed the problem. If so could some one let me know that year or number. Thanks in advance Steve

trumanusa · 11-24-2013, 09:05 PM

Originally posted by pentaxk10duser

I'm looking to get the 50-135 . but I have read about motor in the lens problems. Is this a on going problem with the lens or is there a serial number or year the lens is made that they fixed the problem. If so could some one let me know that year or number. Thanks in advance Steve

Thanks steve for putting forward the question. I also had the same question to ask...

Adam · 11-24-2013, 09:10 PM

Originally posted by pentaxk10duser

I'm looking to get the 50-135 . but I have read about motor in the lens problems. Is this a on going problem with the lens or is there a serial number or year the lens is made that they fixed the problem. If so could some one let me know that year or number. Thanks in advance Steve

Any lens made in the second half of 2012 or later should be problem-free. Take a look at the serial number database to look at serial number trends:

https://www.pentaxforums.com/forums/pentax-serial-number-database/?do=viewse...e&pp=35&page=1

pentaxk10duser · 11-25-2013, 12:47 AM

Originally posted by Adam

Any lens made in the second half of 2012 or later should be problem-free. Take a look at the serial number database to look at serial number trends:

https://www.pentaxforums.com/forums/pentax-serial-number-database/?do=viewse...e&pp=35&page=1

Hi Adam . I'm sorry but I'm stupid .I looked at the serial numbers and the dates purchased and I can't figure out what serial number would be the magic number would be between the good motor and the bad ones. There is a March 2012 with a 9297400 that is higher than all the November 2012 numbers listed. and a Jan 2013 with a lower number 9296869 than the higher march 2012 number 9297400 . So does this mean that all the lens bought in Jan 2013 with lower numbers than the March 2012 9297400 were made before March 2012 and have the bad motors . Does anyone know the Magic cut off serial number from the good motor and the bad ones.

11-24-2013, 08:24 PM	#1
pentaxk10duser Senior Member Join Date: Apr 2007 Location: Kentucky Photos: Albums Posts: 165	50-135 2.8 motor question I'm looking to get the 50-135 . but I have read about motor in the lens problems. Is this a on going problem with the lens or is there a serial number or year the lens is made that they fixed the problem. If so could some one let me know that year or number. Thanks in advance Steve

11-24-2013, 09:10 PM	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,594	Originally posted by pentaxk10duser I'm looking to get the 50-135 . but I have read about motor in the lens problems. Is this a on going problem with the lens or is there a serial number or year the lens is made that they fixed the problem. If so could some one let me know that year or number. Thanks in advance Steve Any lens made in the second half of 2012 or later should be problem-free. Take a look at the serial number database to look at serial number trends: https://www.pentaxforums.com/forums/pentax-serial-number-database/?do=viewse...e&pp=35&page=1 Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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11-24-2013, 09:05 PM	#2
trumanusa Forum Member Join Date: Jun 2013 Posts: 87	Originally posted by pentaxk10duser I'm looking to get the 50-135 . but I have read about motor in the lens problems. Is this a on going problem with the lens or is there a serial number or year the lens is made that they fixed the problem. If so could some one let me know that year or number. Thanks in advance Steve Thanks steve for putting forward the question. I also had the same question to ask...

11-25-2013, 12:47 AM	#4
pentaxk10duser Senior Member Join Date: Apr 2007 Location: Kentucky Photos: Albums Posts: 165 Original Poster	Originally posted by Adam Any lens made in the second half of 2012 or later should be problem-free. Take a look at the serial number database to look at serial number trends: https://www.pentaxforums.com/forums/pentax-serial-number-database/?do=viewse...e&pp=35&page=1 Hi Adam . I'm sorry but I'm stupid .I looked at the serial numbers and the dates purchased and I can't figure out what serial number would be the magic number would be between the good motor and the bad ones. There is a March 2012 with a 9297400 that is higher than all the November 2012 numbers listed. and a Jan 2013 with a lower number 9296869 than the higher march 2012 number 9297400 . So does this mean that all the lens bought in Jan 2013 with lower numbers than the March 2012 9297400 were made before March 2012 and have the bad motors . Does anyone know the Magic cut off serial number from the good motor and the bad ones.

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