Advantages and disadvantages of shadow in camera shooting

Taking portraits as an example, appropriate shadows can appropriately increase the three-dimensional sense of the five senses, avoid the appearance of too flat faces, highlight the charm of eyes, and depict the angular features of men and the charm of women. If the lighting is improper (of course, it is often deliberately improper when portraying negative characters in film and television works), it will highlight bags under the eyes, scars, paleness, and even sinister, evil, horrible and disgusting. There is a famous saying in Hollywood (unfortunately, I can't remember the original) to the effect that it doesn't matter whether an actress is beautiful or not, what matters is how to make her shine. Personally, I think reading more black and white movies will stimulate lighting skills, whether it is photography or video.