----- Original Message ----- From: "Mark Erickson" Subject: My DA* 16-50 F2.8 saga continues
>I recently received my DA* 16-50 F2.8 back from Pentax USA (via California > Precision Service). It had a clear centering defect that yielded softness > on the right side of the image. > > First thing I did when I got it back was to onto my "lens test range" (a > tripod and a couple of test patterns taped to the wall). > > Two different pictures, both taken at 50mm and F8. One is sharp in the > center and left and soft on the right. One image is sharp on the center and > right and soft on the left. And now the SDM autofocus doesn't work. > > Seems to me that the lens has some kind of fundamental mechanical > instability (separate from the now-defunct focus mechanism). > > It's going back to Pentax USA, but I'd say that my confidence in this lens > is pretty much destroyed. Anyone out there care to commiserate? > > Disappointed, Tell them to replace the thing with a new one. 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.
