The Acer X1128i projector displays images in 800x600 px resolution . The image format is 4x3, and for this format, it's best to choose a projection screen. The technology responsible for excellent image quality is DLP. The maximum brightness of the Acer X1128i projector is 4500 ANSI lumens. The highest achievable contrast of the Acer X1128i projector is 20000:1. Without replacing the lamp, it can shine for up to 10000 hours.