What type of camera movement does "Zoom in to CU" refer to?

The phrase "Zoom in to CU" indicates a specific camera movement that transitions the focus of the shot. In this context, "CU" stands for "close-up," which is a type of shot that tightly frames a subject, usually capturing detailed facial expressions or specific objects.

When a camera zooms in, it uses its lens to magnify the image, thereby creating a close-up effect without the need to physically move the camera closer to the subject. This technique is particularly effective in film and video production for emphasizing emotions or important details, thereby helping to convey the intended message more effectively.

Understanding this terminology is crucial for anyone studying film, as it highlights how adjustments in camera focus can significantly alter the audience's perception and engagement with the scene.