What is follow focus in video production?

Follow focus is a focus control mechanism that allows the camera operator or assistant to adjust the focus on a lens smoothly and accurately during a shot. This is particularly important in professional video production where maintaining sharp focus on a moving subject is crucial for the overall quality of the footage. Follow focus systems often involve a gear-driven mechanism that connects to the lens, enabling precise adjustments without physically touching the camera or the lens, which could introduce unwanted vibrations or adjustments.

The significance of follow focus lies in its ability to facilitate complex shooting scenarios, such as shots where the subject is in motion or when the depth of field is very shallow. This level of control helps to create a cinematic look by ensuring that the intended subject remains in focus while allowing for creative exploration of depth and movement within the frame.