Understanding Aspect Ratio & Resolution for projection screen

The three most common video projector aspect ratios are 4:3 (XGA & SXGA), 16:10 (WXGA & WUXGA), and 16:9 (standard HDTV, 1080p). Which is best for you? It depends on what you plan to project. As always, your best bet is to match your projector’s aspect ratio with that of your source.