The HP 2159m is a 21.5-inch Diagonal 16:9 Full HD Widescreen Monitor released by HP in 2009. It is similar to the 20" HP 2009m save for a wider screen size and better contrast ratio. It has a 16:9 aspect ratio which makes it deal for viewing movies in their original formats. The display can be optimized for movies, photos, or games with the Quick View mode. It has a 1920 x 1080p maximum resolution, and a 3000:1 contrast ratio (contrast ratio measures the ratio of the luminance of the brightest color (white) of the screen to that of the darkest color on the screen (black) that the system is capable of producing). Glare that has been usually seen on recent glossy screens is reduced in this system using the HP BrightView technology). Both digital and analog content can be displayed using DVI-D with HDMI HDCP and VGA connectivity. With a 5 ms on/off response time, blur can be reduced while watching sports, action movies and games.
