BarTech Focus Device, or "BFD" Overview
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 1000 systems have been sold in 43 countries around the world.
Transmitter Specifications:
Dimensions/Weight: approx. 7" x 3½" x 1½"/1½ lbs.
Power Consumption: 30 mA @ 7 to 15 VDC (9 mA in low power mode)
RF Transmission: 902-928 MHZ Single frequency, part 15 FCC compliant
Resolution: 12-bits (4096 steps), all steps always used
Data Update Rate: 350+ transmissions/second
Transmission Delay: 3 milliseconds
Receiver/Amplifier Specifications Dimensions/Weight:: approx. 4½" by 3½" by 1½" / approx. 11 oz.
Power Consumption: 50 milliamps @ 11-17VDC (Motor off) up to 5 amps maximum when driving a motor
Power Output to Motor: 2 amps maximum @ 18 VDC (36 watts)
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.
Features:
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
M-One - It’s a Package!
Why worry about the need to select a certain gear or mounting bracket? The M-One is sold ready to use with all necessary gear sizes, mounting options, and cable.
The design of the M-One began with a simple question. What is needed out of a lens drive motor system? Power…Reliability…Responsiveness? These are commonly expected, often promised, but rarely delivered to the customer. The M-One offers all this and more. It was designed with the reality of what’s needed out of a motor. For example: it’s a fact an operator needs a motor equipped with enough power to turn any desirable lens. So we outfitted the M-One with the industries’ most powerful motor. It has the capability to turn any lens on the market, and can do so even in sub-freezing conditions. Just as our motor is powerful, it is also equally reliable and durable. The M-One is housed in a protective 7075-T6 aluminum alloy, allowing for heavy extended use. It will work hard in any filming condition and deliver every time. The M-One is not just another motor; it’s a long awaited answer.
M-One Specifications
Length: 154 mm (6.06 in.)
Width: 29.2 mm (1.15 in.)
Height: 68.0 mm (2.70 in.)
Weight: 286 g. (11.29 oz.)
Connector: Lemo Type B size 1, 5 pin.
Rod Collets: 5/8”, 15 mm, 1/2", 19mm w/o a collet.
Lens Gears: Module/Pitch 0.8m-32P, 0.6m, 48P, 0.5m, 0.4m-64P, extra wide 0.8m-32P.
Mounting Brackets: 19 mm universal mounting bracket, Will mount on either side of motor in either direction. Also a 2.5” universal extension/offset bracket with 19mm attachment tubes (1.12” & 2.12” long)
Motor cable: 58 cm (23”) long
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