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11-03-2016, 02:12 PM   #16
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I have the same problem on my K-1. It doesn't properly focus with phase detection, but contrast detect works more or less fine (but slow). After I killed my first K-1 Body (dropped it on a stonefrom about 4 feet), i was hoping that it would work ond the second one, but it doesn't. The strange thing is it works fine on my K-3. So I guess it's the same problem.

It's not the contacts, I cleaned them several times. So I guess it's a problem with some copies of the lens and on some it works fine.

09-29-2017, 02:38 PM   #17
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QuoteOriginally posted by emptyd83 Quote
I have the same problem on my K-1. It doesn't properly focus with phase detection, but contrast detect works more or less fine (but slow). After I killed my first K-1 Body (dropped it on a stonefrom about 4 feet), i was hoping that it would work ond the second one, but it doesn't. The strange thing is it works fine on my K-3. So I guess it's the same problem.

It's not the contacts, I cleaned them several times. So I guess it's a problem with some copies of the lens and on some it works fine.
Same problem here, Loved the Tamron 70-200/2,8 for portraits and with my Pentax K-3. With my brand new K-1 it rarely focuses at all (through the viewfinder). Having a portrait session is a nightmare.
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