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2010Follow Focus forum

Comparing torque ratings of mechanical follow focus motors for handling stiff camera lenses

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

What the thread found

  • The M-One motor generally delivers the highest torque and can handle stiff lenses better than other mechanical options.
  • The Heden M28VP provides strong performance and better quality construction than older FMG motors, though it may struggle with extremely stiff lenses.
  • The FMG motors are prone to slipping under load with stiffer prime lenses.
  • Testing lenses before production and having rental equipment serviced or regreased can help manage issues with stiff focus mechanisms.
  • Among tested motors, the ability to move a Zeiss Super Speed 18mm lens serves as a practical benchmark for adequate motor torque.
  • Motor selection involves three key considerations: power output, mounting compatibility, and operational noise levels.

Depends on

  • Experiences span roughly a decade, with technology and equipment specifications potentially changed since original use.
  • Personal preferences and specific lens collections vary significantly between users, affecting real-world performance assessments.
  • No direct head-to-head testing of all motors under identical conditions was documented.
  • Experiences with Preston MD motors mentioned but not directly comparable to Heden and M-One.
  • SLD motors discussed briefly with limited detail on performance characteristics.

Parts

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