B/W
Black-and-white, often abbreviated B/W or B&W, is a term referring to a number ofmonochrome forms in visual arts.
Black-and-white as a description may be considered a misnomer in that the images are not ordinarily starkly contrasted black and white but combine black and white in a continuum producing a range of shades of gray. Further, many prints, especially those produced earlier in the development of photography, were in sepia (mainly for archival stability), which yielded richer, more subtle shading than reproductions in plain black-and-white. Color photography provides a much greater range of shade, but part of the appeal of black and white photography is its more subdued monochromatic character.