Why does photography depend on the sky for food? Help me write a paper. It's urgent.

Because photography is painted with light and shadow, exposure is very important. The weather outside is changing at any time, and the light is flowing. Therefore, in the absence of external shooting equipment, it is a test of photography level. It is good to depend on the weather for dinner, but it is not absolute. It can only be said that it is easier to take pictures when the weather is good, and a qualified photographer can take pictures under any circumstances.