The manual lists f4 as minimal for both phase and contrast af. The 600/4 should therefore work. Screwdrive AF can be slower. If in doubt send the 600/4 to me. I'll run some extensive field tests and report the results :)
On Wed, 25 Nov 2020 at 20:54, Paul Sorenson <pentax1...@gmail.com> wrote: > > See the link below. Scroll to the bottom of the page to see Pentax > compatible lenses. > > http://www.ricoh-imaging.co.jp/english/products/lens/k/converter/lc-1_4x-aw/ > > -p > > On 11/25/2020 12:13 PM, John wrote: > > On 11/25/2020 08:44:46, Toine wrote: > >> Found a DA 1.4x converter. Tried converters before including the > >> famous 1.7 AF version and never satisfied until this DA version. > >> Combined with the DA300 I can't complain about anything. Tripod test > >> shots as sharp as can be, no additional CA or purple fringing. Let's > >> give it a try in the field, handheld... > >> > >> cropped > >> https://www.repiuk.nl/albums/new/#&gid=1&pid=005-964-20201125-img3752 > >> > >> full frame for pixel peeping > >> https://www.repiuk.nl/albums/new/#&gid=1&pid=005-965-20201125-img3715 > >> > >> I'm impressed and saved 2k on a future 150-450. Maybe someday some > >> serious birding... > >> > > > > I just took a quick look at it at B&H. It says "compatible with Pentax > > KAF2 mount lenses on Select DSLR cameras." They've got it in stock > > with a "Limited supply" at $$$.ΒΆΒΆ. > > > > I'm guessing the K-1 is one of those select DSLRs, but is the FA-600/4 > > compatible? > > > > I'm guessing yes, because it works on the K-1 without the rear > > converter, but I'd like to *know* I'm not fooling myself before I'd > > purchase one. > > > > > > > > > > > -- > Paul Sorenson > Studio1941 > > Sooner or later "different" scares people. > > > -- > 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.
