Explanation of horizontal perspective terms

Horizontal viewing angle refers to the angle between the audience's eyes and the edge of the screen or stage without turning their heads, looking straight ahead.

Generally speaking, the horizontal viewing angle cannot exceed 150 degrees. In television images, the aspect ratio of the horizontal viewing angle is converted from 4:3 to 16:9 in order to better adapt to human visual characteristics. When observing an image, the width of the image in the horizontal direction is commensurate with the angle of the human eye, which is called the horizontal viewing angle.

The horizontal angle of view can also refer to the angle between the line of sight of the students in the front row and the plane of the blackboard when they look at the far edge of the blackboard. It can also mean that teachers and students collaborate together and obtain different angles during the teaching process. and levels of knowledge and experience. This perspective emphasizes the equal cooperative relationship between teachers and students, breaking the traditional teacher-centered teaching model.

Focus on students’ dominant status and participation. In order to prevent students from squinting too much and affecting their vision, the horizontal viewing angle should be no less than 30°. The elevation angle is the angle between the line of sight from the viewer's eyes to the upper edge of the screen and the horizontal line. Excessive elevation of the person's head will cause discomfort, so it is generally required not to exceed the horizontal plane.

Horizontal perspective is important in a variety of situations. In painting and photography, the reasonable use of horizontal perspective can better display the elements in the picture and enhance the layering and three-dimensionality of the picture. When watching movies or TV shows, a suitable horizontal viewing angle can better immerse the audience in the picture and give them a more realistic and three-dimensional visual experience.

Advantages of the horizontal viewing angle:

1. Strong sense of reality: The pictures taken from the horizontal viewing angle are closer to the visual effects of the human eye and can present a more real and natural feeling.

2. Strong inclusiveness: The horizontal perspective can accommodate more picture elements, which is beneficial to showing the overall effect of the scene and providing a richer amount of information.

3. High visual comfort: The horizontal viewing angle conforms to the physiological structure of the human eye, which can reduce visual fatigue and allow the audience to enjoy the picture more comfortably.

4. High degree of creative freedom: Horizontal perspective shooting provides photographers with more creative freedom, and can express the content of the picture through different angles, compositions and shooting techniques.