Color scans and digital camera photographs are typically in RGB format. If not, it is often customary to convert to RGB and work with the image (editing in a graphics software program) in that format. RGB images store values of red, green, and blue that would normally make up a color image. Each color is made up of varying amounts of red, green, and blue.
Sometimes it is necessary or desirable to print or display Black & White (grayscale) photographs. If the original image is in color, a graphics software program such as Adobe Photoshop or Corel Photo-Paint can be used to convert the color image to some form of black & white.
There are a number of methods available for getting a B&W photograph from a color photo.Each has it's own pros and cons and best uses. Trial and error is generally the best approach.The most widely used methods are using the "convert to grayscale" option or the "desaturation" (or "remove color") option in the image editing software.
