What are the functions of positive and negative lenses in TV series?

Forward and backward shooting is a photography technique, which means that when two people face each other, the lens switches between the characters. General framing is "over the shoulder", that is, the front of the speaker is shot above the shoulder of the person with his back to the camera, and several close-ups without shoulders are switched in as a supplement to the forehand and backhand combination.

At least two cameras are needed to build forehand and backhand. The cameras will stop at one side of the 180 degree line, and each camera will focus on a specific actor. There are several ways to construct this action, and the basic method is to establish the existence of the role through shoulder shooting.

Extended data

In Spider-Man in 2002, norman osborn had a dialogue with his other self-the green devil. Director Sam Raimi and photographer don burgess filmed a two-way conversation with only one actor in the mirror.

The scene begins with the sound Osborne heard. He saw his reflection in the mirror, and the other one of the green goblin walked to the frame. This is the first over-the-shoulder shot Norman walked into the mirror.

Next, we turn to the backhand, and the rest of the conversation takes place at the opposite angle of the mirror reflection, and the lens slowly tracks to the tighter lens. Through this framework, the audience feels that Osborne is not only talking to himself, but also showing another self. This is a creative way to capture shots and a single actor's backhand shooting skills.

Baidu encyclopedia-positive and negative shots