Forum: Pentax SLR Lens Discussion
10-21-2015, 08:52 AM
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The two zooms I own don't need adjustments, but if I tested a zoom and found different degrees of AF inaccuracies at different focal lengths, I'd send it to the manufacturer with my camera to have them adjust it. I know that you can send your Sigma lenses to Sigma with your camera and they adjust it for free within a couple of days (at least in Germany).
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