SteadiHub
2008Follow Focus forum

Selecting a complete set of lens drive gears for follow focus systems

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

What the thread found

  • A standard lens drive gear set for cinema and video work typically includes 32 pitch gears at 0.8m width, 48 pitch for zoom lenses, 64 pitch at 0.4m width, 0.5m and 0.6m metric gears
  • The 0.4m metric gear and 64 pitch gear are equivalent
  • The 0.8m metric gear and 32 pitch gear are equivalent
  • A working collection for most applications includes three 32 pitch 0.8m gears, one 48 pitch gear, three 0.5m gears, and three 0.6m gears
  • Video lenses from manufacturers like Canon, Angenieux, and Schneider typically use 0.5m gears
  • Fujinon and Nikon video lenses typically use 0.6m gears for iris control
  • Panavision zoom lenses typically use 48 pitch gears
  • Iris gears for Zeiss T2.1 and T1.3 lenses are rare, expensive, and can be considered optional for most users

Depends on

  • Specific gear requirements depend on which lens brands and motor models are being used
  • One participant asked about the pitch equivalent of 0.5m gears without receiving a clear answer in the thread

Parts

Follow Focus

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