Although there are 100 different schemes and effects for a complicated scene with 100 lighting
engineers, the principles of lighting are all that everyone will follow. For indoor renderings and indoor
photography, there is a famous and classic lighting theory called "three-point lighting."
Three-point lighting, also known as area lighting, is typically used for a smaller range of scene lighting
. If the scene is large, you can split it into several smaller areas for lighting. Generally, there are three
lights, which are main light, auxiliary light and background light.
Body Light: It is usually used to illuminate the main object in the scene and its surrounding area, and
to function as a projection to the subject object. The main light and dark relationship is determined
by the subject light, including the direction of the projection. The task of the main light can also be
done together with several lights as needed. For example, the main light is at a position of 15 to 30
degrees, called a smooth light; at a position of 45 degrees to 90 degrees, it is called side light; at
a position of 90 degrees to 120 degrees, it is a side backlight. The main light is usually done by
spotlights. I like to set the brightness of the subject light to about 240.
Auxiliary light: Also known as fill light. Illuminate the fan-shaped reflecting surface with a spotlight to form a uniform, non-direct soft light source, which is used to
fill the shadow area and the scene area missed by the main light, to reconcile the contrast between the light and dark areas, and to form the depth of field and
The level, and this wide uniform lighting feature makes it a background for the scene, defining the tone of the scene. In order to achieve the effect of soft lighting,
usually the brightness of the auxiliary light is only 50%-80% of the main light.
Backlight: Its purpose is to increase the brightness of the background, thereby setting off the subject and separating the subject from the background. Generally
use floodlights, the brightness should be dark and not too bright.
The order of the light is: 1) predetermine the position and intensity of the main light; 2) determine the intensity and angle of the auxiliary light; 3) distribute the
background light and the decorative light. The lighting effect produced in this way should be able to achieve the primary and secondary distinctions and
complement each other.