Is follow-up focusing automatic?

Following the focus is automatically following the focus.

The principle of following the focus is simple. The coke chasing car has a set of gears to convert the rotation of "following the focus button" into the rotation of "driving gear"; The driving gear drives the gear on the lens focus ring, so that the lens follow focus ring can be rotated by twisting the follow focus button. The focal plane has gears to match the coke chase. General photographic lenses have no gears. If you want to use a focus tracker, you can add gears.

Precautions:

The structure and design of follow focus is also very simple, and the core component is a corner gearbox. Good follow focus has small exposure and moderate damping, which makes the follow focus sense of different lenses more consistent and convenient for users to operate.

In shooting, the photographer usually controls the camera, and a special assistant is responsible for following the focus. Sometimes in some narrow spaces or special angles, in order to facilitate the operation of follow focus, we will use a follow focus whip to extend the control of follow focus.