The AF button is an electronic connection. The screwdriver mechanism is probably released by a purely mechanical linkage in the lens release button or the auto focus selector switch on Pentax cameras. At least that seems to be the way it works since battery power is not necessary.
Adam Maas wrote: > Yes, this would be great functionality, I miss that capability from my > Maxxum 7 (Whose AF/MF button is explicitly for this functionality). > And having this would also allow for the lenses with FA-style AF > clutches to switch the camera in and out of AF mode (Like is possible > with some Nikons), making those diengagable focus rings a whole lot > more useful. As it is, they just mean you have to do two things to > switch the lens to MF (or AF). > > -Adam > > On 12/28/07, Boris Liberman <[EMAIL PROTECTED]> wrote: > >> Well, I understand that now, though I think you would agree that it >> could have been really neat if by pressing the AF button you could >> retract the AF screwdriver... >> >> >> >> Rod Connan wrote: >> >>> I understand this setting simply as a means to disable AF on half press. >>> Thus, repeated 1/2 presses of the shutter release do NOT cause the AF to >>> activate, so long as you have the AF button pressed. >>> >>> Too hard for my simple mind in the opportunistic type of shooting I enjoy so >>> I do not use that option. >>> >>> The focus switch is your tool to do what you describe :)) >>> >>> Rod >>> >> -- >> 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. >> >> > > > -- I am personally a member of the Cream of the Illuminati. A union with the Bavarian Illuminati is contemplated. When it is complete the Bavarian Cream Illuminati will rule the world -- Anonymous -- 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.
