Dots Per Inch is a measurement of output device resolution, used for scanners, printers, digital cameras and others. The bigger value, the higher resolution feature of the device (more pixels with more details fit in an inch). E.g. 1200 dpi is a common value in quality laser printers, while the average is 600 dpi. Those values denote e.g. 600 x 600 dots per inch (2.54 cm x 2.54 cm). Some printers use different resolution for columns and lines – e.g. 1200 x 600 dpi. Monitors and digital cameras often use resolution in pixels (e.g. 1600 x 1200). For comparison – the monitor resolution is about 80 dpi, internet graphic is usually 72 dpi. Optimal maximum resolution for printers is usually 300 dpi. Higher resolution usually does not bring any visible quality.