I would imagine they would do something that would prevent that. I.e, I've seen similar situations where they do something simple like switch the signal polarities or provide some type of pulse modulation or high frequency signal.
[EMAIL PROTECTED] wrote: > I would hope they would work as manual focus lenses. It that's true, > they should work on old bodies. Given the proclivities of people to thy > things that physically work, I hope you can't damage a USM lens or PZ > body if they are mated with each other... > > Kostas Kavoussanakis wrote: > > >>On Thu, 31 Aug 2006, Sylwester Pietrzyk wrote: >> >> >> >> >>>Exactly. One must have lenses with built-in USM motor for USM to >>>work :-) But I guess new mount would be back compatible, so older >>>lenses would work the way they usually did ;-) >>> >>> >> >>Would the opposite also be correct? Would USM lenses work as AF lenses >>on screw-driver bodies? Would they even work as MF lenses? >> >>Kostas >> >> >> > > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
