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 > > > -- Things should be made as simple as possible -- but no simpler. --Albert Einstein -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net