What is the follow-up shot?

This is the way the camera follows the motion of the subject.

Follow-up lens refers to the camera following the moving subject in the shooting process, keeping the stable position of the subject in the picture, so as to capture the dynamic and motion trajectory of the subject. This shooting method is often used to track moving objects. Through the movement of the lens and the relative movement of the subject, the visual effect of following is created, and the audience's sense of participation and viewing experience are enhanced.