Technical Data Sheet

ManualsBrandsIlford ManualsFilmFP4 Plus Black and White Negative Film

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Nov 2018

HARMAN technology Limited

TECHNICAL INFORMATION

FP4 PLUS

ISO 125/22º, BLACK AND WHITE PROFESSIONAL FILM

FOR HIGH PRINT QUALITY AND FLEXIBILITY IN USE

ILFORD FP4 Plus is an exceptionally fine grain, medium speed black and white film. It is ideal for

high quality indoor and outdoor photography, particularly when giant enlargements are to be made. In

addition to general photography, FP4 Plus is also suited to copying and internegative work, and has many

applications in scientific, technical and industrial photography.

FP4 Plus is robust and will give usable results even if it is overexposed by as much as six stops, or

underexposed by two stops. It is compatible with all major processing systems, including those which give the

standard short fixing and washing times.

FP4 Plus 35mm film is coated on 0.125mm/5-mil acetate base and is available

in 24 or 36 exposure cassettes, or in bulk lengths of 17 or 30.5 metres (56 and

100ft). FP4 Plus 35mm film is supplied in DX coded cassettes, suitable for all

35mm cameras.

FP4 Plus roll film is coated on 0.110mm/4-mil clear acetate base with an anti-

halation backing which clears during development. It is available in 120 lengths

and is edge numbered 1 to 19.

FP4 Plus sheet film is coated on 0.180mm/7-mil polyester base with an anti-

halation backing which clears during development. It is available in a wide range of standard sizes. The

emulsion faces the user when sheet film is held in the position shown opposite.

EXPOSURE RATING

FP4 Plus has a speed rating of ISO 125/22º to daylight. The ISO speed rating was measured using

ILFORD ID-11 developer at 20ºC/68ºF with intermittent agitation in a spiral tank.

Best results are obtained at EI 125/22, but good image quality will also be obtained at meter settings from EI

50/18 to EI 200/24. It should be noted that the exposure index (EI) range recommended for FP4 Plus is based

on a practical evaluation of film speed and is not based on foot speed, as is the ISO standard.

SPECTRAL SENSITIVITY

Wedge spectrogram to tungsten light (2850K)

Summary of content (6 pages)

PAGE 1
HARMAN technology Limited TECHNICAL INFORMATION FP4 PLUS ISO 125/22º, BLACK AND WHITE PROFESSIONAL FILM FOR HIGH PRINT QUALITY AND FLEXIBILITY IN USE ILFORD FP4 Plus is an exceptionally fine grain, medium speed black and white film. It is ideal for high quality indoor and outdoor photography, particularly when giant enlargements are to be made.
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FP4 PLUS Technical Information FILTER FACTORS FP4 Plus film may be used with all types of filters (e.g. colour, polarising and neutral density filters) in the usual way. Follow the instructions given by the filter manufacturer. The exposure increase in daylight may vary with the angle of the sun and the time of day. In the late afternoon or the winter months, when daylight contains more red light, green and blue filters may need slightly more exposure than usual.
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FP4 PLUS Technical Information DEVELOPMENT TIMES The table below gives development times for both manual and machine processing FP4 Plus. These times will produce negatives of average contrast suitable for printing in all enlargers. The development times are intended as a guide and may be altered if a different result is needed. For manual processing in spiral tanks and deep tanks, the development times are based on intermittent agitation.
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FP4 PLUS Technical Information ILFORD developer Dilution 35mm and Roll Film Meter setting (EI) 50/18 125/22 200/24 8½ 7½ 7 11½ 10½ Dip and dunk machines (min/24°C/75°F) ILFOTEC DD Kodak T-Max RS Kodak Xtol 1+4 stock stock 7 - ILFOLAB FP40, roller transport and short leader machines (sec/26°C/79°F) ILFOTEC RT RAPID 1+1+2 1+1+5 40 55 45 65 54 84 METER SETTINGS BELOW EI50/18 AND ABOVE EI 200/24 If FP4 Plus has been inadvertently exposed at settings below EI 50/18 or above EI 200/24, the followin
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FP4 PLUS Technical Information CHARACTERISTIC CURVE FP4 Plus roll film developed in ILFORD ILFOTEC HC (1+31) for 8 minutes at 20°C/68°F with intermittent agitation. This curve is also representative of the 35mm and sheet film formats. PROCESSING FP4 Plus can be processed in all types of processing equipment including spiral tanks, rotary processors, dishes/trays, deep tanks and automatic processors. Standard capacity figures and replenishment rates can be maintained.
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FP4 PLUS Technical Information Fix The recommended fixers are ILFORD RAPID FIXER or ILFORD HYPAM FIXER. Wash Wash the films in running water for 5–10 minutes at a temperature within 5ºC (9ºF) of the process temperature. Or see note below for greater economy when using spiral tanks.