A new thingy has arrived, I decided I wanted a motion controlled zoom so I got a couple of cheap screw clamps and a large 32p gear off ebay a RRS slide with a clamp on one end, a 1/2 RPM motor and mount and a 3' plate off ServoCity a Dynamic Perception MX3 controller and bolted it all together and Bobs ya uncle I have a motion controlled zoom.
Just gotta work out how to program the Dynamic Perception MX3
Alan