FOMAPAN 400 Action is a panchromatically sensitized, black-and-white negative film designed for taking photographs under unfavourable light conditions or using short exposure times. FOMAPAN 400 Action has a nominal speed rating of ISO 400, but due to its wide exposure latitude the film gives good results even when overexposed by 1 EV (exposure value) (as ISO 200) or underexposed by 2 EV (as ISO 1600) without any change in processing, i.e. without lengthening the development time or increasing the temperature of the developer used. Process in standard B&W chemicals. Manufactured in Czech Republic.