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12-03-2010, 11:03 AM   #1
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Pentax K-X and Tamron 70-300

I just received my Pentax K-X and kit lens 28-55 and Tamron 70-300 mm 1:4-5.6 A17.
The camera works fine but the Tamron lens won't turn above 180mm.
If I put it in the 180 position I can work the macro switch, but it still will not turn above 180MM.
Brand new to this, am I missing something or is the lens bad.

12-03-2010, 11:20 AM   #2
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It sounds to be that you may have a broken lens. I know that tamron and the equivalent Sigma have a lock for macro mode that limits the range from 180 - 300 mm. If you switch macro on you can't use anything below that. However your having the opposite problem to perhaps someone was careless and forced it when in macro mode.
12-03-2010, 11:45 AM   #3
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QuoteOriginally posted by sb1280 Quote
I just received my Pentax K-X and kit lens 28-55 and Tamron 70-300 mm 1:4-5.6 A17.
The camera works fine but the Tamron lens won't turn above 180mm.
If I put it in the 180 position I can work the macro switch, but it still will not turn above 180MM.
Brand new to this, am I missing something or is the lens bad.

Turn above 180 or below 180?
Try moving the focus ring past the macro focus range (where the gold lettering is).
12-03-2010, 11:46 AM   #4
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It will not turn above 180 in normal or macro.

12-03-2010, 04:44 PM   #5
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If you have already tried what others have said (switching the macro switch both ways and then try zooming past 180) then it is a broken lens. I have that lens and it definitely does not do that. Send it back for an exchange.
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