Black and white and color options for both drawings and photos are available. Color and Black and White do not refer to the content of the image being scanned. Drawing is used for images with large areas of a single color. Line art, logos, and solid color images are examples of the kinds of images to be scanned with a Drawing image type. Files created with a Drawing image type can be edited easily in an image editor.
Photo is used for images with many shades of gray or color.
A photo image type is used to scan images that are to be printed or displayed on imagesetters or color screens. Also, use a photo image type to scan an image that is to be edited. Original photographs and pictures in books, magazines, and newspapers are examples of the kind of images to scan. Halftone is used to optimize the quality of scanned photos when printed on desktop printers. Images scanned as a halftone image type are processed in a way that simulates the many shades of color in the image when it is printed.