Symbolisation Of Light

When looking at a image, a painting, a video etc; I always focus on the lighting in the picture. I see what has the most light and was is in darkness. From there I interpret the lighting and try to understand the painter/photographer/directors meaning of the light. Typically, I see the most lit thing to be the subject that the creator wants the most attention on, and the dark objects to have less attention as they're hidden. below are a few examples that I clearly see this representation.