Some do manage some do not. I tried myself right now. Indeed this is at least tricky. Sometimes OK, sometimes nothing sometimes the body is confused and constantly changes from MF to AF-S/AF-C and that way will focus (with screwdrive).
All this is quite, well I wouldn't play more but if I do have an SDM problem.This isn't a 'reliable' (funny word considering the problematic) work around to me. 2010/12/28 P. J. Alling <webstertwenty...@gmail.com>: > I don't have any SDM lenses so I can't try that, but I thought the consensus > was that this didn't actually work. I'll bow to your superior geekdom if it > does however. > > On 12/19/2010 9:36 AM, Thibouille wrote: >> >> 60-250 is dual AF, as are 16-50 and 50-135, 200 and 300 AFAIK >> Which means it sports screwdriven AF as well but since the lens >> communicates with the body, only SDM will work (even if dead). >> >> To circulvent that, one should short the digital info pin presented on >> the from Kmp: >> http://kmp.bdimitrov.de/technology/K-mount/Kaf.html >> >> This pin came with KAF mount but is still there. >> Shorting it will get you screwdrive AF, but will prevent any digital >> info which means focal length, MTF, lens ID etc. >> Annoying, but you can get AF back if needed. Better than nothing. >> >> 60-250 really does miss an aperture ring. >> >> 2010/12/19 Boris Liberman<bori...@gmail.com>: >>> >>> On 12/19/2010 12:45 PM, Thibouille wrote: >>>> >>>> If you tape the digital pin, the 60-250 will focus noisily enough :) >>>> And this is an FF zoom. >>> >>> Can you please elaborate about this digital pin??? >>> >>> Boris >>> >>> -- >>> 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. >>> >> >> > > > -- > Where's the Kaboom? There was supposed to be an Earth-shattering Kaboom! > > --Marvin the Martian. > > > -- > 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. > -- Thibault Massart aka Thibouille/Thibs ---------------------- Photo: K-7, Sigma 28/1.8 macro, FA50/1.4, DA40Ltd, K30/2.8, DA16-45, DA50-135, DA50-200, 360FGZ ... Laptop: Macbook 13" Unibody SnowLeo/Win7 Programing: Delphi 2009 -- 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.
