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
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