What is the best background color for portrait photography?

I want to go to the photo studio to take a photo, but I don't have the money to buy all kinds of background cloth. Don't worry, in fact, you only need a piece of background cloth to achieve many different effects. Joe Edelman, a famous photographer, showed us how to shoot portraits with different color backgrounds with gray background cloth. He also thought that if you can only choose one background cloth, it must be gray.

In fact, the way to achieve this effect is very simple. For example, if light is not allowed to shine on the background, the background cloth can be photographed as a black background. If a lamp is placed behind the model, the gray background cloth will turn white under the premise of high light intensity. If you add different colors, you can make different color backgrounds.

Black:

Gray:

White:

Color:

Portrait works taken on a gray background;