Although you might want a USM lens some day, and it would be nice to be sure that your K10D was updated for them. However, if it wasn't a very early production camera, you're probably okay. After wading through a lot of mindless babble on the Pentax forum, I've been able to determine with fair certainty that Pentax does have a "revision" that has to be applied to early cameras to make them focus accurately with USM lenses. Pentax
On May 6, 2008, at 6:31 AM, Cory Waters wrote: > Paul Stenquist wrote: >> My K10D is on its way to Pentax Service in Colorado. I tested it >> today with the DA* lenses, which work great on my K20D. Not even >> close. It backfocuses by anywhere from two dentimeters to ten >> centimeters, depending on the focal length and lens.(That's >> centimeters, not millimeters.) I had heard that early K10Dx required >> a revision to work with the DA* lenses. Mind was ordered on day one, >> so it's definitely an early camera. It had also become stuck in >> multi- >> image mode. It couldn't be switched back to single image. I could >> have lived with that, but not with the DA* focus problem. I have to >> be able to use it with one or the other of those lenses when shooting >> events with two cameras. It focuses quite nicely with all of my other >> autofocus lenses. Seems to be a problem relative to the in-lens >> ultrasonic motor operation. >> Paul >> >> > I'm beginning to think it may be a good thing that I can't afford the > DA* lenses... > CW > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above > and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
