Rollei Retro 400S is a high-speed panchromatic black-and-white negative film featuring an extended infrared sensitivity up to 730nm for producing unique halation effects, which can be controlled by exposure. Retro 400S can therefore be used as a normal black-and-white film or as a infrared film when using an infrared filter. Retro 400S is based on the original Agfa Aviphot PAN 400S PE1 black-and-white emulsion.
The nominal speed of ISO 400/27° makes the 400S suitable for use in daylight and artificial light, without any restrictions. Its high film speed offers extensive versatility and latitude, which is further complemented by high sharpness, contrast, and acutance. When exposed at box speed, Retro 400S delivers in general high-contrast images with a high level of sharpness and a very fine grain structure.
The film's polyester base has been tested to an LE-500 (life expectancy 500 years) archival rating and, additionally, this clear base is particularly well-suited to scanning applications.