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BarTech Engineering Analog Focus Device - Focus Model

BarTech Engineering
Abel Code: BTE-BFD-F
Mfr. Code: BFD-F
Estimated to Ship – 5-10 Business Days
The Bartech Focus Device is a single-channel wireless lens control system, compatible with existing analogmotors (Heden, ZB/SLD, FMG-6, as well as the M-One motor); motor sold separately.
Key Highlights
  • Single-Channel Lens Control System
  • 900 MHz Data Transmission
  • (8) Selectable Sub-channels


The BarTech Focus Device, or "BFD", was created in 1999 to fill the need for a powerful, accurate wireless follow focus system that was affordable. It was designed to be as compatible as possible with existing systems (Seitz, WRC-4) and motors (Heden, CPC) to allow operators with existing systems to upgrade to superior performance with a minimum of expense. Since its introduction, over 1,500 systems have been sold in more than fifty countries around the world.

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 backups in case of equipment failure.


  • 900 MHz Data Transmission, (8) Selectable Sub-channels
  • Rotary-style Control Module can lock to other units for multi-channel operation (this kit includes the Focus unit, only)
  • Interchangeable Single-Channel Receiver/Amplifier Module, with Remote Camera Run Output
  • 12-bit Resolution (all twelve bits are always available)
  • 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

NOTE: Motor is not included.

IMPORTANT NOTE: The BarTech power cable uses the same 2-pin LEMO polarity as Heden, RedRock and Freefly.

ARRI, Preston, RED/Element Technica, and Teradek power cables use different polarity and are NOT COMPATIBLE. Use of an incorrectly wired power cable will cause damage to your BarTech Receiver/Amplifier.

What's in the Box

  • XLR4 Power Cable
  • BFD Receiver/Amplifier
  • BFD Transmitter w/ Rotary Control Knob
  • Carrying Case


Key Highlights

  • Single-Channel Lens Control System
  • 900 MHz Data Transmission
  • (8) Selectable Sub-channels
  • 9V Battery (~18 hr operation)


Operating Time:
~18 hr


Input Connector/Port:
LEMO 2-pin

Mechanical & Electronic Controls

Focus Knob:
Handheld Wireless
Electronic Options:
Wireless - 902-928 mHz Single frequency, part 15 FCC compliant
Controls Include:
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