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07-09-2011, 12:23 PM   #1
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Help with auto focus on 18-135mm

Hello I need help with my new 18-135mm it will auto focus with
My K5, KM but not with my K10. Thanks Joe

07-09-2011, 12:25 PM   #2
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The K-10 requires updated firmware to use the internal motor lenses. Check the Pentax site for the latest available firmware for your K10. V1.30 and later.
http://www.pentaximaging.com/support/manuals-and-literature/
07-09-2011, 02:02 PM   #3
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Thank you by the way can a k100d super have a firmware update? Joe
07-09-2011, 02:09 PM   #4
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Not sure but the same site should indicate what is available for the k100 also.

07-09-2011, 03:39 PM   #5
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I'm pretty sure the K100D Super already includes the SDM support, and that this was indeed what made it "super" (the original K100D lacked the necessary hardware).
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