SteadiHub
2013Follow Focus forum

Custom start/stop cable for Red Epic/Scarlet cameras with Bartech follow focus receiver

13 years old. Gear and prices may have changed since.

What the thread found

  • A custom cable can combine start/stop signaling, power pass-through, and tally light indication in a single compact enclosure measuring 1.25x1.25x0.5 inches
  • The cable design eliminates the need for a separate Red sync breakout cable, a dedicated power line, or battery changes on the receiver
  • Power can be passed through from the camera to the Bartech receiver, allowing a single power cable to supply both devices
  • The design works with analog Bartech receivers and includes a power loop-through feature that supports accessories like iris sliders
  • Soldering a 00 Lemo connector for this application is technically feasible with proper practice
  • The cable can be mounted to the receiver with Velcro, attached to the camera body, or left hanging freely

Depends on

  • The digital Bartech receiver does not have a power output, limiting applicability to analog Bartech setups
  • Cost per unit was not precisely documented but was stated to be less expensive than commercial alternatives priced around $450
  • The design was bench-tested but field testing results were pending at the time of discussion
  • Some users preferred alternative implementations from other cable makers
  • The cable design evolved from multiple maker attempts with varying feature sets

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
Read the original threadAsk about this threadThe answer cites the archive