NOT KNOWN FACTS ABOUT WHY IS MY PROJECTOR SCREEN GETTING DIMMER

Update, Andy. Did A fast comparison measuring the center with the screen employing my light meter having a entire white screen vs 10% window.Epson prompt our quantities appear to be frequently reduced (Dazzling Cinema, they are saying, need to are available about 1,800 lumens). We want to revisit this with a repeat measurement in more ideal problem