On May 23, 2008, at 5:42 PM, William Robb wrote: > > ----- 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
That fixed mine. Of course it was less than a week old. Paul > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > 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 PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
