What is the function of the dome light in the movie and what emotions are expressed?

Top light: the light above the main body illuminates. Under the top lighting, the horizontal illumination of the scene is greater than the vertical illumination, and the brightness range of the scene is large, lacking the middle level. Shooting people under the top light will produce unusual effects, such as bright forehead, black eye socket, drooping nose shadow, prominent cheekbones and shadows on both cheeks, which is not conducive to shaping the aesthetic feeling of the people. If the auxiliary light is used to improve the brightness of the shadow to form a small light ratio, a better shape can also be obtained. In landscape photography, if the shooting position is appropriate, good tone effect can also be obtained. Top light includes front light, top light and top light. The first two lighting effects are similar, and the latter lighting effects are similar.