What are the differences between projection white screen and gray screen

When choosing a home theater projection screen, some people have such a question: Should you choose a white screen or a gray screen? Some people's first reaction is that a white screen is better, because the colors are more transparent and vivid, which makes the picture clearer. However, due to the narrow range of knowledge of the curtain, the understanding of the gray screen is very little, even the gray screen is misunderstood.

Gray screens are called "high-contrast screens." It works like this: a gray screen can absorb more ambient light than a white screen, but a white screen does not have this feature, so you can keep the black bit on the screen, the white on the projection screen can still keep the white, the black is because the ambient light interference is reduced and becomes darker, which directly leads to an increase in the contrast of black and white on the screen, thus achieving the purpose of improving contrast.

Does the gray screen not reproduce the correct white? People often misunderstand gray screens and think they don't reflect white enough. In fact, white isn't white enough because the projector's output isn't as bright, and it matches low-gain or over-sized screens. It's a mismatch problem. Whether you use a gray screen or a white screen, if the choice is not appropriate, the white display may not be white enough. A gray screen may be whiter than a low-gain white screen, so don't doubt the whiteness of a gray screen, since whiteness depends on whether the projector's reflected light provides enough brightness.

Is the color of the gray screen not pure? Another misconception is that gray screens reproduce colors incorrectly and are biased. In fact, whether white or gray, different screen materials have different color temperatures, meaning that if you shine a 6500K light bulb at the screen, the reflected light may be 5500K, 6500K or 7300K. Depending on the color temperature of the screen material, white and gray screens can have the same or different color temperatures. This is just the result of comparing projectors with the same Settings, but if you adjust the projector's Settings, both the white and gray screens can get the correct 6500K color temperature. The projector is also adjusted for different screen materials, and the gray screen is not skewed.

The pros and cons of gray screens. The benefit of a gray screen is not only that it makes black darker, but also that it increases contrast and resists ambient reflected light. Gray screens are less affected by reflected light than white screens, making them ideal for home and living room theaters. Home and living room theaters are small, cramped environments that are largely influenced by the light reflected off the walls, making it difficult to achieve a true small dark room theater model. Gray reflectivity is lower than white, so the gain of a gray screen is usually lower than that of a white screen. But the relationship between gain and viewing Angle is relative, so a wide viewing range is one of the benefits of a gray screen.

White screen or gray screen for home theater? Both the white screen and the grey screen have their own advantages and should be based on the actual application. A white screen is best when the surrounding light is controlled. But by "fully controlled ambient light," we don't just mean turning off the lights in the audiovisual room. We also have to consider the potential effects of the audiovisual room itself. If you want to make your home theater audio-visual room like a movie theater, with dark walls, dark ceilings, dark furniture, and even dark carpet, then it goes without saying that a white screen is the way to go.

In real life, the projection system of home theater is usually located in the living room or multi-purpose entertainment room, and the walls, ceilings or furniture of the room are basically painted with paint that reflects light or other effects, and even some curtains reflect light. So, even if all the lights in the room are turned off, the light reflected from the projection screen, through the wall, ceiling, furniture, curtains, and back to the screen. In this case, if it is a white screen, there will be a layer of fog on the screen, resulting in some blurred images, while the gray screen can eliminate these light interference, so that the screen maintains a deeper black, stronger contrast, more transparent picture, clearer! Of course, the gray screen can not eliminate the interference of light 100%, so appropriate shading processing, will make the picture effect has been significantly improved.