Paul wrote: As I'm sure you know, the menu focus adjustment corrects for a throughout-the-range mismatch. If your lens focuses accurately at 2 meters, you won't be able to change the infinity focus. However, I suppose it could be front focusing throughout the range. Good luck.
BTW, when shooting at infinity and 16mm, I almost always focus manually. I figure to do otherwise is asking too much of an autofocus system. But you of course want your lens to be accurately calibrated. Paul ----- My first sample of the DA* 16-50 autofocused to infinity at 16 mm just fine on my K10D. It wouldn't do it on the K20D. I am beginning to wonder if the problem is the positioning of the AF sensor (or the positioning of some part of the AF system) in my copy of the K20D. When I tested the 17 lenses for AF adjustment on the K20D, most needed some minus correction. Pentax just replaced the sensor and electronics of my K20D, but I'd guess that they didn't have a reason to venture into the shutter/mirror/AF sensor area. Those are probably original. The instruction for correcting AF on a zoom lens is to do it at the midpoint of the zoom range. So I'll check it at about 33 mm. or so. 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.
