What is plane light?

When distributing light, as long as the main light forms a smooth effect, it is called plane light. Plane light is a smooth light level effect light. Note: Plane light is not necessarily front light. The main light of the front light should always be used on the front of the face, and the front light will make the T-shaped area of the character brightest. When a person's face faces the camera more positively, the plane light becomes the front light. The characteristics of plane light: the face of the character is clean, delicate and without shadow. Plane light can be composed of a single lamp, two lamps, three lamps and multiple lamps. The more lamps there are, the greater the illumination area. No matter how much light is used, as long as it comes from the optical axis of the camera and is irradiated with horizontal light, it belongs to plane light. If the main light you form is not the brightest light in the optical axis direction of the camera, even if you use three lights or four lights, it is not plane light.