What is the 30-degree rule in photography? What is the 180-degree rule in photography?

1. The viewing angle of the two sets of lenses is no less than 30 degrees. The 30-degree principle means that when shooting the same object, the angle between the front and rear shots should be greater than 30 degrees. This avoids the audience’s feeling of jump cuts and prevents the audience from noticing that the film’s editing ensures the continuity of the film. It is commonly used in photography and has little to do with photography.

2. The 180-degree rule is one of the first concepts beginners in film photography learn, but for some reason it is one of the hardest to stick to. It seems simple: draw an imaginary line that bisects the space between actors, and place your camera on one side of the semicircle without crossing over to the other side. That is, this creates a spatial relationship between the actors on screen that is understandable to the audience, who can easily orient themselves because they know where everyone and everything is. For example, if you are shooting a two-person shot where person A on the left side of the frame is facing right and person B on the right side of the frame is facing left (more simply, the two people in the frame are looking at each other), you have to make sure that the close-up and over-the-shoulder shots The camera has the same angle of view as the two-shot.