The photograph needs to be cropped to eliminate the surrounding data. This option works best with images that have a solid color background such as black or white. The scanner color and brightness levels are sometimes adjusted incorrectly, resulting in scanned images that are too bright or contain too much of a single color as in the case above. Auto-Brightness brightens any dark areas and darkens light ones. Used in combination, these two effects can significantly improve image data.
Resolution is the amount of information an image contains.
This information comes together in the form of pixels. Pixels appear as tiny dots, which, when placed closely together create the illusion of continuous colors and shades-the colors and shades which give shape to your image. Scaling refers to the physical size of your image, in inches or pixels, not to its resolution size. When scanning images you need to keep in mind the resolution of the output device through which your images will be displayed. Different output devices use different methods to display image data and have different limitations on their output resolution.