These settings are the nuts and bolts of scanning and will ultimately determine the quality of the final scanned image. Still, it is good to understand the basics of all the types. Line art Line art includes anything that is black and white, like an ink sketch. The most important thing to remember about line art is that it does not contain any shades of gray or any color shadings. Generally, these types of images produce the smallest files in terms of space used on your hard drive.
Color images contain the most complex information and consequently result in the largest file sizes.
High end scanners process considerable detail and result in vivid color reproduction and lifelike textures, but the file sizes can often become unmanageable. There is another image type you are unlikely to need but which may be fun to experiment with. Halftone images are reproductions of images that give the illusion of gray. The illusion of gray is achieved only because the black and white dots that make up the image are arranged in such a way so as to fool the eye into seeing shades of gray. The greater the dpi number, the higher the resolution.