Originally posted by mfdesalas I suppose the only ones who can really tell whether the failure rate of Pentax SDM is higher than Canon or Nikon is Pentax.
John: A bigger strawman has rarely been built. I am not talking models but the SDM motor, and your comparison lacks logic, models are obsolete the moment a competitor releases a new one. All the same, I wish your SDM motors live long and prosper. Mine did not. While on the topic, I shoot with all of K, M, A, FA and DA lenses. The K 30mm f2.8 is one of my favorites. The screw-drive in the F and FA lenses has lasted quite well (coming close to 20 years, right?). I am frankly skeptical of the lasting power of SDM motor in the DA* lenses, when mine struggled to live out 18 months of sporadic use.
So what you are saying is that your lenses without motors have had no motor failures? Hey, me too, as well as everyone else with motorless lenses!
I empathize with those that have had SDM problems. It must suck. But how do we distinguish between a bunch of unlucky but statistically minor group vs a real issue? I remember someone posting a message from a lens rental place - IIRC they gave no indication that SDM motors failed at a significant rate.
I've had computers fail me, defective phones, cars recalled, and myriad other devices stop working. It's just the price you pay for increasingly complex devices.
If you really believe this is an issue than I suggest a more coordinated effort to get it addressed, i.e., a letter writing campaign to a consumer protection organization, a more statistically valid survey of DA* owners, or even a class action suit.
Finally, my straw man isn't nearly as big as the one you started this thread with LOL!