Projector Screens And The Gain Factor
Every Screen Has A Gain Factor Which Determines Which Model You Need.
After you have chosen what type of projector screen, you need to consider the gain factor. Gain is a measurement of how much brightness is reflected off the screen’s surface compared to a standard white board. The way a screen surface refracts light is what differentiates one screen fabric from another.
Screen Gain And Reflects
A screen with a 0.9 gain only reflects 90% of the light while a screen with a 1.0 gain reflects 100% of the same amount. A screen with 1.5 gain reflects 50% more light and a screen of 2.0 gain reflects twice as much light.
That doesn’t necessarily mean the image will be twice as bright. The gain factor determines how much light is on the actual screen.
The first projector screens were grey in order to improve the levels of blacks shown. These negative gain screens don’t really make that much difference now with improved projector contrast ratios and black level.
The highest gain is not necessarily the best screen for you. Take into consideration the size of the room, lighting, projector being used conditions and content being shown. Review each type of gain to help you determine which screen to purchase.
