An update on getting my 10-20mm f/4-5.6 repaired by Sigma in Ronkonkoma, NY:
They are impressively fast. They received the lens this Monday, and it's back in my hands today. Unfortunately, they seem to achieve this speed by not actually fixing lenses. My complaint was "Uneven sharpness. Top of frame is noticeably softer than bottom of frame." The repair invoice said: "ADJUSTED AF DATA" The AF on the lens worked fine. The problem is optical misalignment, and there's no mention of optical work performed. Quick test shots show that the lens is just as soft at the top as it's always been. I've sent a bitch-o-gram to their customer service email, with a photograph showing the problem in the "repaired" lens. We'll see how they respond. On Tue, Nov 25, 2014 at 9:41 AM, Matthew Hunt <m...@pobox.com> wrote: > Thanks, all... the lens is going back to Sigma in New York based on > lots of people being satisfied with them. C.R.I.S. seems like a good > bet too, with people being less satisfied with the Georgia and > Illinois service centers. > > On Mon, Nov 24, 2014 at 1:35 PM, Matthew Hunt <m...@pobox.com> wrote: >> My Sigma 10-20mm f/4-5.6 is softer at the top of the frame than the >> bottom, even when stopped down to small apertures, so I would like to >> have it checked out while still under warranty. It looks like there >> are four Sigma service centers in the USA: >> >> Sigma Corporation of America, Ronkonkoma, NY >> C.R.I.S., Chandler, AZ >> Camera Repair Japan, Duluth, GA >> Bigston Corporation, Elk Grove Village, IL >> >> Does anyone have experience with these shops, that might steer me >> toward or away from any of them? I know C.R.I.S. was until recently >> the Pentax warranty repair center, and it seemed like I generally >> heard good things about them. -- 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.
