ViewSonic's PJ503D projector combines a stylish exterior with a bright picture and easy-to-use controls, resulting in a rich home theater experience. For a rich, sharp picture, the PJ503D leverages space-age DLP display technology. Boasting a contrast ratio of 2000:1, this projector delivers blacker blacks and whiter whites, avoiding the "washed-out" look that plagues other projectors. With a native resolution of 800 x 600, this ViewSonic projector can handle all the latest video formats. This projector will work with a screen placed anywhere from 5 feet - 19.7 feet away. The size of the picture the PJ503D can project is anywhere from 38 inches - 150 inches, depending on the unit's distance from the screen. The aspect ratio for this ViewSonic projector is 4:3 (standard). A widescreen 16:9 image is ideal for home theater use and watching movies, while a standard 4:3 image is great for presentations or connecting to a computer. You won't have to worry about connection support with the PJ503D, as its inputs include a composite video jack. Brightness is an important consideration when purchasing a projector. Usually, a brightness of at least 1000 ANSI lumens is bright enough for home theater use in a darkened room, but for use in presentations or other settings which are not as dark, a minimum brightness of 2000 ANSI lumens is suggested. The PJ503D displays images with a brightness of 1500 ANSI lumens. Before purchasing a projector, don't forget to research how long you can expect its lamps to last and how much a lamp will cost to replace. This unit comes with a lamp rated for 2000 hours of use. There's even more to love about this projector, with features like keystone correction and much more. ViewSonic categorizes the PJ503D as a portable projector. It measures 10.35 inches wide by 4.25 inches deep by 8.6 inches high. It weighs in at 5.7 pounds. This projector operates at a noise level of 30 dB. The part number for this item is VIE5011.