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The quality of a screen usually has two core indicators, one is the contrast ratio and the other is the brightness of the screen image. Brightness will in turn affect the presentation of colors, and the brightness of...

How to choose a projection screen based on projector lumen? Image from:http://itempage3.auction.co.kr/DetailView.aspx？itemno=C408164618 ●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○● The following are our recommended suggestions for matching projectors and screen. Since the data standards of projectors are different, the following data are only used...