On Tue, May 19, 2009 at 11:35 AM, Graydon <[email protected]> wrote: > On Tue, May 19, 2009 at 04:16:17PM +0100, mike wilson scripsit: >> ---- Graydon <[email protected]> wrote: > [gunch] >> > Because the screwdriver is there on the adapter, but there's nothing in >> > the lens to adjust. I don't want the camera body trying to turn >> > something it can't to find out if anything adjusts. >> > >> > And yes I could set the camera body to MF before mounting the lens, but >> > forgetting should not have dire mechanical consequences. >> >> It doesn't. I use M series lenses all the time on my DL2, leaving AF on so >> that I can use focus confrim and trap focus. Been doing that for just over >> three years and for another mumblemumble years with my Z1-p. I cannot see >> any marks on my lens mounts at all. > > With the Adaptall 2 adaptor, there's a lens, and then a mount-specific > adaptor. If the lens is pure MF, and the adaptor -- because that's what > one can get off ebay -- supports auto-focus, the camera has absolutely > no way to tell that the screw drive isn't connected to anything.
No Adaptall mounts support AF. There are 2 versions for K mount, one is plain K and the second is KA (but not 100% KA, as aperture reporting via contacts is only accurate within certain limits). Some Chinese clones also exist, but are essentially uncoupled preset adapters that are really an uncoupled M42 mount on a M42-K adapter. AF confirm Adaptall adapters exist for other mounts (but are the same chinese uncoupled stacked m42 setup) but those only enable AF confirm (and Av mode on some Sony bodies). -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
