What the thread found

• A motor in an analog follow focus setup can exhibit significant slowdown or even stop rotating during the calibration phase in one direction, while operating normally during actual shooting.
• Replacing a worn potentiometer resolved vibration issues but did not prevent subsequent calibration problems with motor speed.

Depends on

• The issue was reported on a single unit with one specific lens combination and may not generalize to all setups.
• The underlying cause was not definitively identified in the thread.
• No resolution was documented in the discussion.

Parts

Follow Focus

Same gear or parts

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