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Thread: Is that true DA*50-135's sdm motor is very broken?

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    Default Is that true DA*50-135's sdm motor is very broken?

    Heard from friend that they say the sdm motor of DA*50-135 is very easy broken? Is that true? How many of Pantexians have this lens and how many got broken?

  2. #2
    Senior Member darrrrrrrrrr's Avatar
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Quote Originally Posted by dasha View Post
    Heard from friend that they say the sdm motor of DA*50-135 is very easy broken? Is that true? How many of Pantexians have this lens and how many got broken?
    Used mine since July with no problems, the previous user used it for 1 year+ with no problems either. I think it's just a vocal few that tend to make a lot of noise, while the majority of happy users aren't on forums or don't voice out.

    I'm selling mine, are you thinking of buying?

  3. #3

    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Quote Originally Posted by dasha View Post
    Heard from friend that they say the sdm motor of DA*50-135 is very easy broken? )
    aiyo.. very easily broken different from very broken.. your thread title made me come in.. if not i won't since i don't have 50-135 da*...

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    Senior Member felixcat8888's Avatar
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Quote Originally Posted by darrrrrrrrrr View Post
    Used mine since July with no problems, the previous user used it for 1 year+ with no problems either. I think it's just a vocal few that tend to make a lot of noise, while the majority of happy users aren't on forums or don't voice out.

    I'm selling mine, are you thinking of buying?
    Pentax LBA poison being let loose here . . .
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    Senior Member darrrrrrrrrr's Avatar
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Quote Originally Posted by felixcat8888 View Post
    Pentax LBA poison being let loose here . . .
    So many new K-x users.. time to spread some fun and joy around here.

  6. #6
    Senior Member felixcat8888's Avatar
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Quote Originally Posted by darrrrrrrrrr View Post
    So many new K-x users.. time to spread some fun and joy around here.
    Then I should let go of my 135/2.8 hahahah
    Pentaxian for Life
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  7. #7
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Mine has no problem since the day I bought it. Touch wood.

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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    so far so good.

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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    not just SDM, other brand AFS, USM, all will have potential problems after some time, just a matter of time, its electronic motor, bound to have failure like any electronics equipment...some use for 5 yrs without problem, some use 5 days already problem... so depends on luck...

    i for 1 try to avoid lens with built in motor, firstly they dun focus any faster, 2nd as mention, electronic parts vs pure mechanical, which 1 last longer ?
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    We had a thread about this earlier this year, you can read about it here: http://www.clubsnap.com/forums/showthread.php?t=482188. Based the little bit of info on this thread, that would be 2 50-135s and 1 16-50 SDM motors having been replaced.

    If Kevin (our very friendly and helpful Pentax service man, now with Emjay) is right, it was mainly the early batch of 50-135 that had SDM problems. After changing the motor, my 50-135 is still performing wonderfully now.

    So I think maybe you can say that only the early batch DA*50-135's SDM is "very broken", but in general SDM motors are just about as hardy or fragile as any other built-in AF motor out there, "not really easily broken". But modern electronics are modern electronics lah....

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    Member scorpioh's Avatar
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Try your hands on those lenses without SDM like me if you are afraid of SDM being very "cui".
    I say the lens is the soul of a camera. What about the body? Well, it's just the body...

  12. #12
    Senior Member felixcat8888's Avatar
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    Default Re: Is that true DA*50-135's sdm motor is very broken?

    Quote Originally Posted by dasha View Post
    Heard from friend that they say the sdm motor of DA*50-135 is very easy broken? Is that true? How many of Pantexians have this lens and how many got broken?
    If afraid to own SDM lenses, then go for manual lenses. Safest route . . .
    Pentaxian for Life
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