Fomapan 400 Action is panchromatically sensitized, black and white negative film of the speed ISO 400. This film features a good resolution and it is intended for use under unfavorable light conditions or using short exposure times.

The film meets high requirements for low granularity, good resolving power and good contour sharpness. Fomapan 400 Action has a nominal speed rating of 400 ISO, but due to its wide exposure latitude the film gives good results even when overexposed by 1 EV (exposure value) (as ISO 200/24°) or underexposed by 2 EV (as ISO 1600/33°) without any change in processing