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04-25-2011, 03:37 PM   #1
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potential backfousing issue

I'm having a focusing issue with a FA-50. I bought it about a year ago, but have never used it as much I'd like because of a focus issue. It seems to backfocus consistently. It's most noticeable while wide open, which isn't a big surprise I guess. I don't see the same problem with other lenses.

Is there a way that I can test this in a rigorous way? I'd like to know if I should send the lens in for repair.

04-25-2011, 04:38 PM   #2
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There are a bunch of threads here about the focus issue with the K-R. Testing is the same. You don't say what camera you have, so I can't say if you have focus correction in the camera body, some do. Search for camera focus testing.
04-25-2011, 06:23 PM   #3
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i'm shooting with the K100D Super - I'll look for more info, thanks
04-26-2011, 06:13 AM   #4
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Here is a focus test chart for downloading.
PENTAX DSLRs: PART-1. Free Autofocus Adjustment charts for front and back focusing problems. Good for Pentax, Canon and Nikon.

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