Toralf Lund wrote:
Sylwester Pietrzyk wrote:
P. J. Alling wrote on 05.10.05 9:43:
Pentax could do that, if they wanted to.
They did. At least in patent filed a few years ago. I have even made
a PDF
from that patent, we called it "KAF3" mount. It used current digital
contact
for communication and powerzoom contacts to provide voltage supply
for USM
and IS motors.
But what if the contacts were missing? Would you still be able to do
AF the other way?
But strangely Pentax has removed power zoom contacts in the
newest cameras...
Have they really removed it, or just used the KAF mount instead of
KAF2? As far as I can tell, KAF2 has been used only for relative
higher-end cameras; KAF ones have always been produced along with
them. For instance, while the MZ-5n/MZ-3 and MZ-S have KAF2 mounts,
the MZ-6 and "below" have KAF.
- Toralf
Umm, as far as I'm aware, the lower-end MZ's use a KAF2 mount without
Power Zoom contacts. There's also a new data exchange protocol involved
in the new mount. *ist D is definitely a KAF2 based mount, as it does
the MTF program Line, which requires the KAF2 data protocol.
-Adam
