The Acer X128HP projector displays images in 1024x768 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 X128HP projector is 4000 ANSI lumens. The highest achievable contrast of the Acer X128HP projector is 20000:1. Without replacing the lamp, it can shine for up to 10000 hours.