On Feb 9, 2011, at 7:53 PM, William Robb wrote: > On 09/02/2011 6:12 AM, Paul Stenquist wrote: >> What exactly is the "front focus problem?" I performed the autofocus fine >> adjustment for the K-5 and all of my lenses. While some required minor >> adjustment, the K-5 came closer as-delivered than either my k20 or K-7. And >> those lenses that did require adjustment were pretty much split between >> front and rear focus tweaks. BTW, the two lenses that required the most >> adjustment were the FA 50/1.4 and the FA35/2. The DA* lenses were very close >> to dead-nuts right on. > > At EV 3 and below with tungsten light, the K5 will front focus with screw > drive lenses. With SDM lenses, the AF seems to work as advertised, or at > least it does with my camera. > With screw drive lenses, my camera front focuses quite badly. > It takes a pretty particular set of circumstances (dim warm light, and a fast > screw drive lens used near wide open and a short subject difference) to see > it. > > There is a lot of noise about it on PentaxForums, which is pretty typical for > them. > It's kinda Hysterics R Us > Thanks Bill. Good to know. I rarely use a screw drive lens, so I will file this under things I don't need to worry about. Paul > -- > > William Robb > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions.
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