Scanning resolution

O The quality of scanned images is indicated by optical resolution, usually measured in the number of dots per inch (dpi).  O When a document is scanned, the resolution of the scanned image can often be specified.  O Scanners today usually scan at between 2,400 × 2,400 dpi and 4,800 × 9,600 dpi. O A higher resolution results in a better image but also results in a larger file size.