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06-16-2016, 08:15 AM   #1
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K-5 Auto Fokus issius

I believe that my K-5 which I by now have had for some years, are starting to become less able to provide accurate autofocus.

It use longer time to get in focus, than it use to be (it has never been impressive). It makes a lot of focus hunt and make not always spot on focus on an object.

The lens I use is a Tamron 18-250 F/3.5-6.3 Di II LD.

Can I do something to correct it? Or is the camera / lens just worn / broken?

Regards Frederik, Denmark.

06-16-2016, 01:12 PM   #2
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Is your Tamron a recent purchase, or did you use it with K-5 all those years? How about other lenses? Cleaning electric contacts on the mount could help.
If the lens is indeed mechanically worn, there could be some internal friction that is slowing motor down.

Last edited by Aberrator; 06-16-2016 at 01:25 PM.
06-17-2016, 07:19 AM   #3
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Original Poster

Thank You, for the reply.

I have almost only used the Tamron all the years, and I have at the moment no other lenses I can try on the camera.

I will try cleaning the elctrical contacts on the mount and try another lens from another Pentax-owner

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