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DPChallenge Forums >> Tips, Tricks, and Q&A >> Sigma 70-300mm f/4-5.6 APO Macro Super for Nikon
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 06/12/2006 06:55:08 PM · #1
my sigma lens doesn't seem to be focus in auto or manual, is this common? . doesn't matter if i use a tri-pod or not, also i use a cable release when at 300mm.

Andy
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