What is the relationship between the special effects of science fiction movies and the green screen? What exactly is the green screen for?

The green screen is for special effects. The special effects of science fiction movies are difficult to shoot. We need to cut out the pictures and then synthesize the scenes we need. The actor stood in front of the green screen to perform, and later deducted the special effects made by the computer on the green background. Green screen is the preparation of special effects.

Many movies and TV series need a grand background. In order to save manpower and material resources, green screen shooting and post-matting are adopted. Moreover, some sci-fi movies can't shoot the required background, so they can only do special effects. Thumbnail is to cut out a specific part of a specific picture and then synthesize other pictures. There are not only green screens, but also blue screens, but green screens are more widely used.

If there is no color on the surface of the subject, you can choose it as the background color. Because a certain color on the surface of the main body and the color of the curtain are heavy, it is easy to buckle when cutting the picture. Green and blue are the colors with the least skin tone. Using green and blue curtains has no effect on human body. At the same time, the camera is most sensitive to green.

The choice of background color depends on the color of the subject. Theoretically, as long as there is no color on the surface of the subject, this color can be used as a "curtain". Of course, in practice, blue and green are the most commonly used. In fact, the blue screen is still widely used in Asia, and it is often used in original TV series shooting. Because most Europeans have blue eyes, Hollywood in Europe is basically a green screen, so don't worry about having your eyes cut off. If you use a blue screen, although the blue screen has no effect on the skin color of Asians, it often appears in our clothes. In order to facilitate matting, a green screen is used.