Follow Focus: Function
Follow focus systems enable the camera assistant (1st AC) to adjust focus smoothly without touching the lens directly, ensuring stability and accuracy.
Follow Focus: Components
- Focus Knob/Wheel — Operated by the AC, often marked for focus points.
- Gear Drive — Transfers movement from the knob to the lens focus ring.
- Mounting Bracket — Attaches to rods on the camera rig.
Importance in Filmmaking
In narrative filmmaking, where depth of field can be very shallow, even slight focus errors can ruin a shot. Follow focus systems allow for repeatable, precise focus pulls.
Follow Focus: Variations
- Manual — Standard on most sets.
- Wireless — Used for gimbals, cranes, or situations where the AC cannot be near the camera.
Follow Focus: Notable Use
Critical for complex shots like those in Birdman, where focus shifts multiple times within a single take.