How to take a picture with such a black background?

1, with light-absorbing black background cloth, the main body is far away from the background cloth, and the background becomes dark again in the later period;

2. Use high-speed synchronous flash to darken the background (the exposure speed is fast enough to darken the clear sky). Similarly, the subject should be far away from the background, and the colorless dark gray and black background can effectively reduce the difficulty of darkening; This is the best way to shoot a black background and the effect is also the best. This is the way to take your sample. But you must use a professional camera such as a SLR, and at the same time use a flash and flasher that support high-speed synchronization)

3. Laminate on a black background and pad later.