Jim, The MZ-60 (and all the 'crippled' KAF2 mount bodies are fully functional with A series lenses. It's K/M series lenses they are not functional with.
-Adam jim wrote: > On Thu, 16 Aug 2007 07:21:02 -0400, Adam Maas wrote: > > Adam/ David > > I am very well aware of the info contained on those pages on Boz's site. > However. have either of you looked at an MZ60? It cannot be used with A > series lenses at all. > So it stands to reason that pentax would remove anything that is used for A > series Lenses. > Indeed they have, the apature feed back leaver but only contacts A1 and A2. > R1, R2 and R3 are still present along with the * contact. > So it stands to reason that the R contacts are used for lens serial > comnunication of some form. > As i said earlier, A broken sigma lens and a logic probe says that there is > some form of comnunication > happening. I have told Boz but without some facts/ logic traces to back it > up, I cannot prove it. > Also the lens info contacts can be made to do both input and ourput. > > James > > >> Jim, look at Boz's site. The Pentax contact layout uses 6 pins as a >> coded max/min aperture info(6 bit digital code, 3 bits for max aperture, >> 3 bits for minumum), one to indicate whether or not the lens set to A >> and one as a signal line. The latter only exists on F or later mount >> lenses and KAF and later mount bodies and is the only contact involved >> in any communication between the lens chip and the body (the mount >> itself is ground). The two pins inside the mount on KAF2 bodies are >> power for Power Zoom and SDM lenses. > > > > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
