SteadiHub
2015Follow Focus forum

Resolving focus tracking inaccuracy in Bartech wireless follow focus system

What the thread found

  • Play in follow focus systems can be reduced by increasing motor torque settings
  • Lens stiffness and friction characteristics affect focus tracking accuracy, with slippery lenses sometimes showing improved precision
  • Resolution bit depth differences between systems relate to handset and receiver versions rather than motor specifications
  • A 16-bit capable system requires both a handset with iris upgrade and a V2-1 receiver model

Depends on

  • Testing was done with specific lens types and may not generalize to all lenses
  • The relationship between lens friction and accuracy improvement was observed anecdotally rather than systematically tested
  • Upgrade to stronger motors was suggested as a potential solution but not confirmed to fully resolve the issue

Parts

Follow Focus

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