What are the decisive and decisive moments in photography?

Bresson's "decisive moment" refers to the photographer's perfect combination of form, conception, composition, light and events at a certain moment. Simply put, it is a snapshot waiting. For example, if you want to shoot a fallen leaf, you can find an autumn tree and other leaves to capture the coming moment, and combine the fallen leaf with light and angle at a set time to shoot a picture. The inconclusive moment was put forward by Frank. He believes that the world is spinning fast and the world is not perfect. We should observe this ordinary world through extremely casual eyes and fuse the photographer's unique view of life with a seemingly casual glance. In other words, it is not an instant capture under waiting, not some established perfect combination.