The Rollei RPX 400 is a traditional high speed black and white film that is a good choice for a variety of photographic and scientific applications including portrait, nature, architecture and product photography. This film is good for general indoor and outdoor photography applications. It is a fine grain film that enables good sharpness and a broad tonal range with good contrast. Rollei RPX 400 is panchromatic sensitized from 380 to 660nm and has a broad exposure latitude.