It builds on the quality and reputation of ILFORD FP4 and continues the ILFORD reputation in medium speed films. Compared with FP4, it has finer grain and shorter processing times. When given standard development it has a speed rating of ISO 125/22? to daylight. FP4 Plus has a high acutance emulsion which, combined with its fine grain and exposure latitude, ensures superlative quality the ideal film to use for all high quality indoor and outdoor photography, particularly when giant enlargements are to be made. FP4 Plus is versatile and will give useable results even if it is overexposed by as much as six stops, or underexposed by two stops. FP4 Plus is compatible wit h all major processing systems including those which give the standard short fixing and washing times. There is no need to change standard processing techniques when switching to FP4 Plus from FP4, or any other ISO 125/22? film. FP4 Plus is very robust during processing, giving excellent results under most conditions, and will also tolerate processing conditions that are less than ideal.