From what aspects can lens scheduling be written?

Mirror scheduling is an important means of expression in film and television art creation, such as movies and paintings. Mirror scheduling is designed in advance to show the relationship between the objects photographed by the camera, and to display the mirror images with the same viewpoint, the same shooting angle and the same viewing distance. It breaks the space limitation that the audience of traditional drama performances can only watch in a specific angle and range, and realizes the connection with the same space. Narrative mirror scheduling includes changing focal length or changing camera position and mirror optical axis.