The soft light cover is also called the flash scattering cover. It can soften the light from the flash and make the photos look more natural. It is a device installed on the flash to soften the strong light. Its principle is to convert the rigid flash direct light into soft diffuse light through the high-temperature translucent plastic, eliminate the annoying high spots on portraits and other shooting objects, and make your photos as beautiful and natural as those taken in the studio. The white cover is a diffuser, a natural diffuser. We often see photographers use some covers made of white cloth to shoot in the studio. That's the reason. Different colors have different ability to absorb light. Darker colors such as black have a strong ability to absorb light and convert more heat energy