----- Original Message ----- From: "Paul Stenquist" Subject: Re: Frustrated With AF Problems
>I think it means that you are testing too much and not taking enough > pics. I also think that your problems may be a symptom of having to > be "first on the block." My DA* 50-135 focuses perfectly with my K20D > at both 50mm and 135mm. I did adjust it. I think the number was -1 or > thereabouts. It's too bad though that one can't buy a new product and have it work right. Pentax has been making AF systems and zoom lenses for long enough that a buyer shouldn't have to be worried about buying an early release product. This seems to be a bit systemic, in that a number of K10 owners (myself included) reported focusing errors also. My 31mm lens went from being an excellent lens on my film cameras to an OK lens on my istD to a dissapointingly bad lens on my K10. Fortunately, that hack got reported and I was able to bring the camera into acceptable performance fairly easily. Having said that, I really think Joe should humour us and retest his lens at the short focal length and see if his pictures aren't acceptable at the long end. Note, I am saying pictures, not test charts. I believe I intimated in a previous post that all the adjustments they put into this camera would probably cause some grief, as a certain amount of measurebating is unavoidable when one can play with tweaking settings, and I would question their judgement about putting settings like this onto a camera but for the fact users from every camera maker are having similar problems. I appreciate that Pentax is selling pretty good bang for the buck, but I would happily pay a premium for equipment that had actually passed quality control rather than just packed in styrofoam and shipped to the dealer. When I was using Nikon, I was told by a rep that a significant part of the cost of an F2 was making certain that little things like ensuring the 100% viewfinder shipped with the body was actually aligned so that what you saw really was what you got, that the mirror and screen was aligned so that the optical distance between the rear nodal point of the lens and the screen and film plane was identical, and that the exposure system was accurate. Pentax really seems to be having problems sending out collimated optical gear, and if they hope to keep selling equipment they need to pull up their socks and fix their QC problems. William Robb -- 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.
