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04-25-2008, 09:25 AM   #1
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Location: Ste-Anne des Plaines, Qc., Canada
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Defective 16-50 2.8

A Pentax Canada tech representative told me the way to check for defective 16-50 lens. With a wall at 3 to 4 yards, at 16mm and f:2.8, you focus carefully and if a corner seems blurred (generally upper left corner), then the lens is defective. He said this is the easy way to find out. I have to take his word since my lens work all right, but it is worth a check by other members.

04-25-2008, 10:31 AM   #2
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Join Date: Sep 2006
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I won't say much other than I'm not that impressed with the Pentax Canada Tech staff at the moment.
So I wouldn't really believe that.

To me the best test is real life results.
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