Larry, the behavior you listed is OK, as any lens without QuickShit (all third party lenses). My 28/1.8 focusses without problem in MF however although the weight of the glass means you really have to turn it, not push it gently. That being said it does turn without problem, rattling or whatever.
It is nowhere damped like MF lens but not more annoying than any FA lens. On Thu, Dec 10, 2009 at 10:24 AM, Larry Colen <l...@red4est.com> wrote: > > On Dec 10, 2009, at 12:38 AM, Boris Liberman wrote: > >> Larry, isn't there a some kind of clutch that you have to engage or >> disengage prior to going manual focus? > > If the lens is in autofocus and the body is in autofocus, then it will > autofocus without the focusing ring turning. > If the lens is in autofocus and the body is in manual, then it won't focus. > > If the lens is in manual focus, and the body is in autofocus, it will > autofocus, but the focusing ring will turn. It will not manually focus. > If the lens is in manual focus and the body is in manual focus, then it'll > focus manually. The problem being that if feels graunchy, the focus is not > smooth. > > Even with the lens off the body, the focus is not smooth. > >> >> On Thu, Dec 10, 2009 at 10:26 AM, Larry Colen <l...@red4est.com> wrote: >>> >>> Does anyone else have the 20/1.8? >>> >>> Optically it seems like a sweet piece of glass. Unfortunately while I >>> needed >>> it last weekend, it didn't show up until Monday and I haven't had a lot >>> of >>> time to play with it. >>> >>> The first thing that I noticed was that in manual focus, focusing it >>> felt >>> like it was turning a motor. >>> >>> It also turns out that if the lens is in manual focus, and the camera is >>> in >>> auto focus, autofocus still works, it's just that the focus ring won't >>> turn >>> when the camera focuses. >>> >>> Looking on the mount, when I manually focus, the drive gear for the >>> autofocus will turn. >>> >>> The big problem is that this makes the lens unpleasant to manually focus, >>> though it works fine, it feels bad. Is this the way it's supposed to >>> work? >>> Or do I have a bad copy of the lens? >>> >>> -- >>> Larry Colen l...@red4est.com sent from i4est >>> >>> >>> >>> >>> >>> -- >>> 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. >>> >> >> >> >> -- >> 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. > > -- > Larry Colen l...@red4est.com sent from i4est > > > > > > -- > 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.
