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Forum: Pentax SLR Lens Discussion
03-04-2009, 09:16 PM
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Hi Guys, I have a Sigma F2.8 APO DG II 70-200mm HSM lens and it's been fantastic, but I wanted a little more reach on the lens. I got a Teleplus Pz-AF 2x MC7 off ebay. It has all the correct connections for the HSM but when I try to use the AF it never focuses correctly. It just searches in and out. Sometimes it will find focus but then goes straight back to searching for focus. I have tried it on bright sunny days as I though it may have been a bit dull for the light metring to work.
Any ideas ????
Thanks
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