Who knows the difference between a compound light source and a single light source?

Composite light source refers to the uneven color temperature of light source, such as: sunlight is 5600K, Wan Li is even as high as 10000K, and candlelight is 3200 K. However, film can be divided into daylight type and illumination type. Using daylight type to shoot the sheets inside the house will be yellow, and using light type to shoot the sheets outside the house will be blue. When daylight shines into the room and white woven lights are on in the room at the same time, you choose what to shoot in the room. At this time, a variety of light sources constitute a mixed light source. If you shoot with solar film, the color of things near the window will return to normal, while the place near the light is yellow. If you shoot in light mode, there will be a difference between normal and color cast. Synthetic light source of natural light source, artificial light source and basic light source for photography. Single light source refers to the unity of color temperature of light source. Just the opposite of the above.