On Mon, Dec 12, 2011 at 01:48:26PM -0500, Mark Roberts wrote: > John Francis wrote: > > >My PZ-1p has exactly the same set of contacts as my K-5. > > > >The digital signals flowing over the signal path may be different, > >but the physical electrical interface is the same. > > Are there digital signals involved? My understanding has always been > that the PZ contacts never supplied anything other than power. AFAIK > data is sent via one of the contacts in the lens mount flange.
I made no statement about which of the many pins carried digital signals, just that the while the signals sent by the PZ-1p might not include all of the signals sent by the K-5, the number and layout of the lens-body contacts was identical on the two cameras. While there is definitely one pin whose sole purpose is to carry digital signals, it is unclear whether some digital communications are sent over other pins (which could include the power contacts introduced on the PZs). Examination of signal traces and/or wires on some Pentax models suggest this may be the case, but there is no official information from Pentax. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
