That HC grey screen rejects most of the facet lighting. This permitted me to even have my aspect window shades open up a few inches on sunny days, and continue to have a large, great football picture. When your ambient is coming from straight again close to the projector, like https://epsonprojectordimscreenfi00998.thenerdsblog.com/40524502/top-projector-bulb-replacement-epson-secrets