I had previously posted a question about a camcorder shutter - there is apparently no need for such a device, and soemone gave me insight that what I mistook for a shutter is actually the iris.
Perhaps with this outlook someone can answer my question.
Since previously posting, I disassembled another, older camera and found a similar device.
There are two coils of different resistance each of which can fully open the iris mechanism. I had previously assumed he mechanism functioned like a rotary solenoid because I initially expected it to fully open.
Now, knowing it is an iris, it needs to open to whatever opening is needed.
I will wire one up anticipating a proportional movement, analogous to a meter movement. I expect that perhaps two opposing voltages may determine how far it can open.
Can some one describe to me or refer me to a mechanical iris control circuit?
Thank you
Murray