Foresight lens means that the ratio of the subject to the height of the picture is about

A telephoto lens refers to a lens with a wide scene with the ratio of the object to the height of the picture about 1: 10 or less, and the field of view is below 30.

Forward-looking lens plays an important role in film and photography. They are usually used to show the whole scene, showing grand natural scenery, urban landscape or war scenes. The telephoto lens can give the audience an immersive feeling, which makes people feel as if they are in the scene and feel the grandeur and vastness of the scene.

In a distant shot, the ratio of the subject to the height of the picture is usually small, and the subject occupies a small proportion in the picture, and the picture is mostly composed of background and environment. This kind of lens is usually used to show the panorama of natural scenery and urban landscape, such as mountains, rivers, forests and urban buildings. When shooting these scenes, the photographer needs to choose a higher shooting point so that the whole scene can be included in the picture.

The telephoto lens is also often used to show the smallness and powerlessness of the characters in a wide scene. For example, in a war movie, the telephoto lens can show the helplessness and insignificance of soldiers in the war, highlighting the cruelty and ruthlessness of the war. In addition, telephoto lens can also show the smallness of characters in the natural environment and emphasize the harmony between man and nature.

The telephoto lens can not only show the whole scene and the position of the characters in the scene, but also show some specific situations and emotions. For example, telephoto lens can show people's performance in different emotions such as joy, sadness and loneliness, so that the audience can better understand the emotional state of the characters.

In film production,

The use of telephoto lens also plays an important role in the development of the plot and the characterization. Through telephoto lens, the director can better show the background and environment of the story, provide more information for the audience and enhance the audience's understanding and feeling of the story. At the same time, telephoto lens can also provide more space and possibility for the characterization, and let the audience better understand the character and emotional state of the characters.

In a word, telephoto lens plays an important role in film and photography. It can give the audience an immersive feeling and make people feel immersive. By using telephoto lenses, photographers and directors can better show the whole scene, the relationship between people and the environment, as well as specific situations and emotions.