World's sharpest 400-speed B&W filmWorld's finest-grained 400-speed B&W filmAdditional speed for low light and fast actionPushability up to ISO 1600Maintains subject detail in prints at higher degrees of magnification than conventional filmsKodak T-Max 400 Professional film is a continuous-tone panchromatic black-and-white negative film. It is also useful for scientific and biomedical work, especially when fluorescence photography is required. It has high speed (ISO 400/27 in most developers), very high sharpness, extremely fine grain, and high resolving power; it allows a high degree of enlargement.