Black-and-white - Black-and-white films, no longer so commonly used, are for the most part plain silver halide emulsions. The essential simplicity of an image that varies only in tone make it particularly favored in photography that aims for a strong graphic content. It also works for subjects that benefit from being distilled and simplified, such as in certain types of landscape and photo-journalism.
Black and white film colors vary from very slow and extremely fine-grained at one end of the scale, to ultra-fast but grainy at the other. Because there is only a single tonal range - and a single emulsion layer - rather than a tri-pack, black-and-white film is easier to manipulate than color. Also see Chromogenic film.
