SteadiHub
2010Follow Focus forum

Power supply considerations when using follow focus systems with RED cameras

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

What the thread found

  • RED cameras can shut down during follow focus operation when the follow focus system is powered from the camera's battery rather than from an independent sled power source
  • Powering the follow focus system from a separate battery plate with its own D-tap connection prevents voltage drops that can cause camera shutdown
  • Running the RED camera from its own dedicated battery while powering the follow focus from sled batteries eliminates power-related issues
  • Powering additional accessories through the camera's accessory port can cause the camera to freeze or behave erratically
  • Early RED camera models were more prone to power-related shutdowns than later versions
  • Motor systems draw increased power when the lens ring is rotated to its mechanical stop, which can blow fuses if the fuse rating is insufficient

Depends on

  • The exact mechanism of camera shutdown was not definitively determined in the discussion
  • Reports of the issue were more common with older RED camera models and may not apply to newer versions
  • The problem was observed primarily when using lower-charge batteries or specific battery types
  • One participant mentioned the issue seemed to resolve when switching to Anton Bauer batteries, suggesting battery compatibility may be a factor

Gear in this thread

HU3, MDR

Parts

Follow Focus

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