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07-07-2014, 08:55 AM   #1
john s amatuer

telephoto not focusing

Pentax F zoom lens 70 - 210 does not focus other lens works correctly

07-07-2014, 09:39 AM   #2
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Try cleaning the contacts.
07-07-2014, 10:25 AM   #3
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Can you provide a little more detail?
  • What Pentax body are you using?
  • Does the focus motor run in an attempt to focus?
  • Does the focus mechanism engage? (Focus changes in viewfinder as motor works)
  • Does the body indicate that focus is attained, but the image is not in focus?
  • Can the lens be manually focused (AF off)?
  • Did AF with this lens previously work?

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