I tested the DA 16-45 at about 40mm, f4. At some point, I'll check it at 16 or 20mm as well. I have only checked it at one distance. But after reading your post, I did check infinity focus by eye and found it correct insofar as a normal visible check colud determine. Since the focus adjustment for this lens was only one point on the scale, I'm not worried about basing it on a single test for now. But I will follow up. When the FA 50/1.4 required a -4 adjustment, I checked it at two distances -- about five feet from target and ten feet from target. The -4 adjustment proved correct at both distances. I suspect that will prove true for other lenses as well. I would never even have started this except for the fact that the FA 50 showed noticeable front focus. I suspect it was doing the same thing with the K10 but I didn't notice or attributed it to user error. Some day I'll check it on that camera. But, for the most part, I'm too busy taking pictures to spend a lot of time fiddling with hardware. Paul On Mar 5, 2008, at 10:58 PM, Joseph Tainter wrote:
> Paul, thanks for the report. Do you mind a couple of questions? > > For the DA 16-45, did you test the adjustments at more than one focal > length? Or just one (which one?)? How did that work? > > Secondly, I assume you are shooting your chart at not too great a > distance. Does this give you the results you want for all distances? > > Joe > > -- > 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.
