Who can tell me what 18-degree shooting is?

The continuity of the lens can help us tell a good story in visual language. To do this, we must first understand what the axis is and the 18-degree rule, and then arrange the shooting position in the right way. Let's look at the basic concepts of axis and 18-degree rule, and how to set axis, change axis and establish new axis. Axis is an imaginary line between the subject and the person or object who plays with him, or an imaginary line along the motion path of the subject, which is used to set and maintain the direction of the actor or behavior in the scene. The 18-degree rule means that from the moment you put the plane on one side of this line, you need to keep all other planes in the 18-degree arc on this side. Fixed-field lens When you show a scene for the first time, you usually need a fixed-field lens to explain the layout of the scene to the audience and determine the direction of the actors or behaviors on the screen. At this time, we set the axis in this scene. Changing Axis The change of an actor's line of sight will lead to the change of the axis, such as the scene of a three-person dialogue. When the first actor ends the dialogue with the second actor and then turns his head to the third actor, the axis will change. Another example is that the change of the actor's movement direction in the scene will also cause the axis to change.

Axis is a virtual straight line used by film and television workers to establish picture space, form and communicate with other objects. Usually, axis is divided into relationship axis and motion axis. Axis is the basic element used by film and television workers to establish screen space, form a sense of direction of screen space and the positional relationship of the theme to be expressed. In order to ensure the relatively stable position and unified movement direction of the object in the film and television picture space, film and television workers should set up camera positions or arrange movements in the area on one side of the axis, which is the "axis principle" that must be observed when dealing with the relationship between scenes and lens movements. In the picture that abides by the principle of axis, the positional relationship and moving direction of the represented object are certain, which is in line with the visual logic of the audience, otherwise, the phenomenon of "over-axis" will occur. In the picture taken after "off-axis", the position and direction of the subject are inconsistent with those in the original picture. Generally speaking, the pictures taken before and after the off-axis cannot be combined. If hard lines are connected, visual acceptance will be confused.