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12-14-2008, 12:58 PM   #1
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Hello - and a request for assistance!


My name is Camel58. I have a Pentax K10D and am having a problem with the auto focus. I am hoping someone else has had a similar problem that they were able to resolve and can help me with mine.

The auto focus does not work at all. When you press the shutter button, it shifts ever so slightly back and forth very quickly but will not focus. Manual focus works just fine and I can use it that way ... it is only the auto focus that seems to be malfunctioning.

I will welcome all suggestions to address this issue - Thanks!

12-14-2008, 03:31 PM   #2
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Welcome to the forum, is the same situation for other lenses as well?
12-14-2008, 04:10 PM   #3
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You should give us the lens name and model for us to make a better guess than the following.

My DA* 50-135 exhibited this behaviour and I resolved it quickly by using a microfiber cloth (the one you get with eyeglasses) and denatured alcohol to clean the contacts on both the lens and the camera body. Sometimes, it only takes a demount and remount of the lens to clear up something that is sitting on a contact that arrived while the lens was off the camera.

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