> simulator is only needed for K and M-lenses, right? So what we really need
> is a device that will add the contacts to K- and M-lenses!
>
That's not the problem. That can be done. The problem is that on
the K/M lenses, the aperture actuator lever is moved "all the way"
whenever a shot is taken. The lens stops down to wherever the ring was
set to.
On an A (or later) lens, the contacts tell the body what wide open
is. The body then moves the lever "part-way" to stop it down as much as
it decides to. The "part-way" is calibrated on the A and later, on the
pre-A it is not and is meant to be all-or-nothing.
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net