Ilford FP  FP is a cubic-grain black-and-white film from Ilford Photo with a long history. It originated as Fine grain Panchromatic roll film in 1935. Like its faster partner product, HP film, it has gone through a number of versions since then, with the latest being FP4 plus (FP4+ for short). The film is known for being versatile, with usable results even when underexposed two stops or overexposed six stops.