On Mon, Dec 18, 2017 at 3:16 AM, Anthony Farr <farranth...@gmail.com> wrote: > First you need to isolate the fault to either the lens or the camera > body. You have other camera bodies so start by determining if the > Bigma behaves or misbehaves on those. > regards, Anthony
Similar problem this past summer with my D200 and 70-200 f2.8. It would focus then it would not. After some experiments i determined it was the D200. I did clean the contacts. It worked well on my D1H and D2H so it must be the D200. Dave > > > On 18 December 2017 at 17:49, Larry Colen <l...@red4est.com> wrote: >> This afternoon I was photographing a heron at the Waldport seawall with my >> K-1 and sigma 50-500 during low tide. It had flown from one spot to >> another, I was walking back to the new spot, photographing as I went, and at >> one point the camera went completely out of focus, then wouldn't even >> attempt to focus. I eventually got it back on track, got some more shots, >> then the bird spooked, flew off (past me) I tried for some flight photos but >> the lens again went completely out of focus, then refused to do anything to >> get back into focus. With the bigma I couldn't (easily) manually focus and I >> completely lost my opportunity for those BiF photos. >> >> Does anyone know what causes the focus mechanism to freeze up like that, or >> any way to convince it to try to refocus? >> >> -- >> Larry Colen l...@red4est.com (postbox on min4est) http://red4est.com/lrc >> >> >> -- >> 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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.
