A fairly comprehensive look at the Bartech Wireless Follow Focus System from Magnanimous Media.
The BFD exceeds the performance of the old standards (Seitz, WRC-4) at a fraction of the price. Its compatibility with existing motors (Heden, ZB/SLD, FMG-6) allows the use of readily available used equipment as well as the new M-One motor. Its modular approach and interchangeable components allow you to start simple and build your way up to a full featured system, while providing back-ups in case of equipment failure.
900 MHz Data Transmission, 8 Selectable Sub-channels
Rotary Style Control Module That Can Lock Together to Other Units For Multichannel Operation (Focus unit shown)
Interchangeable 1 Channel Receiver/Amplifier Modules, each with Remote Camera Run Outputs
12-bit Resolution with All 12-bits Always Available (A First!)
Fast, Simple One-Pass Manual Lens Calibration
Control Modules Powered by an Inexpensive 9V Battery (18 hours of operation)
Direct Potentiometer Input to Receiver/Amp for Servo-type Operation, or Direct Connect Transmitter to Receiver (Hard Wire)
Automatic Standby Battery Saver Mode & Low Battery Indicator
Automatic Motor Shut Down to Save Power