Ilford HP5 Plus (ISO 400) HP5 Plus is a fast black-and-white panchromatic film with great versatility. It is ideal for action, available light and general purpose photography. HP5 Plus is compatible with all major processing systems, including those that give the standard short fixing and washing times. Although rated at ISO 400/27?, HP5 Plus can produce high-quality prints when exposed at meter settings up to EI 3200/36 and given extended development in Ilford Ilfotec DD-X, Ilfotec HC, Microphen or Ilfotec RT Rapid developers.