How is the black background taken in photography?

There are three ways for digital cameras to take photos with black background.

First, you can use black paper or black cloth as the background for shooting.

Second, the brightness difference between the subject and the background is more than four levels. Under the irradiation of sunlight, dark green and dark leaves can be used as the background, and a picture with a black background can be obtained by measuring the brightness difference between the subject and the background by more than four levels. If the side is backlit, you can shoot beautiful side light.

Third, cutting the picture to the bottom is not recommended.