With digital technology, you can shoot black-and-white images using a number of different techniques. Before the days of pixels and memory cards, if you wanted to take monochromatic pictures, you loaded a camera with black-and-white film. With digital cameras, it's a little more complicated: You can either shoot directly in black-and-white or convert your color images later.
Many digital cameras have settings that allow you to preview your images in black-and-white or even see black-and-white through the viewfinder as you're taking pictures. This mode is especially useful for beginners because it allows users to instantly evaluate and revise their images. Furthermore, color is removed from the process, allowing photographers to focus on qualities like light, pattern and texture without unnecessary distraction.
Digital photographers can also convert their color images to black-and-white using their computers' imaging software. This is a popular technique because the user can apply a wide range of filters to the original image, instantly preview changes and easily undo any unwanted editing. The original color image can then be saved for future conversions and adjustments.