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03-17-2017, 05:46 PM   #1
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Pentax 15-30 - AF Issue


Has anyone had previous issues with the AF motor on the 15-30? I've been using mine only with manual focus of late as I've been doing long exposures through a 10 stop filter which prevents reliable autofocus.
I've just put the lens back on the K1 today and flicked it to Autofocus, I got a loud noise almost like an old screw drive lens whens its hunting through the focus scale and then it stopped and won't focus now at all, other lenses seem ok on the body so I think I can rule out the K1 being the issue.

Its even more a pain as I'd arranged to sell the lens so I've had to cancel the sale.

I know a few folks previously on Nikon have had issues with the Tamron variant of the lens so I suppose it could be the same in the Pentax? At least its under warranty but its still a pain, wasn't expecting issues with such an expensive lens.

03-17-2017, 07:45 PM   #2
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Ahh....another rank and file member of the customer lens quality control department. You should feel honored
03-18-2017, 03:44 AM   #3
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Mine has behaved impeccably.
03-18-2017, 05:58 AM   #4
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I am sure you have tried all of the easy fix solutions like cleaning the camera and lens contacts? From the sounds of things, it does seem likely to be the motor. How long were you using it manual only? How long have you had the lens and is it still under warranty? If so, should be good outcome. I often use mine manual only for astrophotography (of course without the neutral density filters) and have had good luck so far. I have only had my Pentax 15-30 for 9 months.


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