The actual operation of photography backlight (white background cloth; Gray background paper)

It seems that your research is very deep. In order to get a good background effect, besides the lamp, the lens also has something to do with it.

Using a large aperture fixed-focus lens can blur the background better than a zoom lens, and try to widen the distance between adults and the background.

This is convenient for the layout of background lights, and can also make up for the light spots produced by some lights, so that the lighting effect is more uniform.

1. In order to illuminate a seamless background evenly, most photographers will use two lamps and cross-illuminate. The background light shines on the background behind the figure at a 45-degree angle, and the farther away from the background, the more uniform the light is.

2. Put a lamp behind the figure and shoot against the background. The light diffuses from the center to all directions, and the subject is highlighted by the background light. If it is not convenient to put the background light behind the figure, you can add a beehive to the light and shoot the background from the side.

3. Put the light source behind the background cloth to transmit light and produce various light effects.

4. Making a background light box can also be considered.