There are two settings for you to choose. First, quality, is the color quality as a percentage (from 0-100%). The second option is "res", or the resolution -- The larger it is, the fewer pixels the output will be. After you select these two options, just click anywhere else on the screen, and it will start scanning!
same thing but improvements! quality 10 for a scan time of 5.4 secs quality 20 for a scan time of 6.6 secs quality 30 for a scan time of 10 secs quality 50 for a scan time of 30 secs //recommended quality 75 for a scan time of a min quality 100 for a scan time of 3.333 mins