Moose,
I'm just interested in how the machine works. I'm certainly not
trying to build any new hardware.
Since the communication is serial, eleven contacts seems a lot. I
suspect that support for legacy (non micro) 4/3 lenses might be the reason.
Mike
At 23:11 18/06/2019, you wrote:
On 6/18/2019 1:57 PM, Jan Steinman wrote:
From: Mike Bloor <admin@xxxxxxxxxx>
I'm sure it's been discussed here before, but can anyone point me to
a description of what the electrical contacts on the micro 4/3 mount do?
I don't think it's disclosed, unless you are a micro-four-thirds
consortium member, which costs big bux.
I have a link somewhere to some guy who hooked a logic analyzer up
to the pins and did a bit of reverse-engineering, but it hasn't
been updated in years.
Even if one knows what they all are for, some part is a serial comm
interface. The processor in the camera talks to the one in the lens
Unless one knows the "language", there's no point.
So, MikeB, what are you trying to do? In the link Piers posted, the
fellow is clueless "you could monitor the signals, for focus etc.
Then you'd be able to add an external potentiometer and let the
Arduino send the focus signals."
"So now you could have a relatively inexpensive electronic, or even
wireless follow focus on any of you auto focus lenses." I'm not sure
what he's getting at; how would the Arduino know the distance to the
subject? These cameras don't focus by subject distance anyway, They
know the ~distance, but that's post focus.
My cameras do C-AF internally, anyway. Or might he be talking video
focus "pulling"?
Serial Moose
--
What if the Hokey Pokey *IS* what it's all about?
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|