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09-03-2012, 12:26 PM   #31
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QuoteOriginally posted by Anvh Quote
From what i know and have seen the lenses with a short focus throw are also the faster lenses to focus.
Obvious but then not for everybody it seems.

09-03-2012, 12:30 PM   #32

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Last edited by beholder3; 08-11-2013 at 07:20 AM. Reason: [deleted]
09-03-2012, 12:34 PM   #33
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I give up; it's simply not worth it. I tried to explain it but apparently that did not succeed. Have fun. See ya.
09-03-2012, 01:31 PM   #34
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QuoteOriginally posted by Anvh Quote
It are not the motors that fail per se, also the AF mechanism have problems but Pentax is the only one the have lenses with 3 different ways of focusing so very complex.
I'm not sure what you mean by that. The only references I've seen are to failed drive motors. I suspect that language may be failing, too, in the reports that people have made, in which they describe the motors as having "burnt out". I presume that is the phrase used by the repair service, but it makes no sense in the case of a piezo motor.

I have seen people here speculate about the single drive motor being "unbalanced" and causing failure of the mechanism, but AFAIK that's only been guesswork and not direct experience. My experience has been with a jammed motor, for which a repair process thread was created here.


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