What the thread found

• A microprocessor-controlled interface cable enables the Canon C100, C300, and C500 to transmit camera start and stop signals to Bartech, Preston, and C-Motion remote follow focus systems through existing 3-pin Fisher Arri Run cables.
• The interface uses the camera's 2.5mm stereo LANC port to communicate run and stop commands via onboard microprocessor monitoring.
• A green LED on the interface indicates successful cable connection and camera power status.
• A red LED indicates when the camera is recording, with the microprocessor continuously verifying camera status through LANC protocol communication.
• The system is compatible with both analog and digital Bartech systems.

Depends on

• Limited to Canon C100, C300, and C500 camera models.
• Requires existing 3-pin Fisher Arri Run cables for integration with follow focus systems.

Parts

Follow Focus

Same gear or parts

1. 2026Pulling focus and zoom yourself while operating, especially on live showsOperator practice
2. 2026Swapping an ARRI ALEXA 35 between tripod/studio and Steadicam® mounting: baseplate choice and fastest workflow.FacebookSteadicam operators group
3. 2025LC-1 (Lens Control-1) follow focus system: wired architecture, motors, and early operational experience (1990s).FacebookThe Steadicam Group
4. 2024Modifications to a Steadicam Scout rig for expanded power distribution and connectivityGeneral Discussion