How do different tones affect the photo structure?

High-profile photos give people a sense of holiness, clarity and openness, so high-profile photos give people a visual feeling of lightness, purity, liveliness, comeliness, tranquility, elegance and comfort. High-profile photos are not "all white". A small amount of black (or dark color) is essential in a light and elegant tone environment. These dark tones often become the visual center of the picture. Low-key photos are suitable for themes with black as the main tone, and low-key photos can appear dignified and sad in some emotional atmosphere. Intermediate tone is the tone of a photo, which gives people a fantastic impression and can produce a feeling of peace and lightness, with strong contrast (big contrast). Intermediate tone gives people a sense of life, strength and excitement. Compared with plain photos, the middle tone gives people a feeling of desolation, depression and simplicity.

Tone can express the atmosphere and also convey some information to the rendered picture.