ILFORD
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FACT SHEET
FP4
ISO 125/22º BLACK AND WHITE PROFESSIONAL FILM
FOR HIGH PRINT QUALITY AND FLEXIBILITY IN USE
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 and
30.5 metres (56 and 100ft). FP4 Plus 35mm film is
supplied in DX coded cassettes, suitable for all
35mm cameras.
FP4 Plus rollfilm is coated on 0.110mm/4-mil clear
acetate base with an anti-halation backing which
clears during development. It is available in 120
and 220 lengths and is edge numbered 1 to 19
(120) and 1 to 40 (220).
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.
EXPOSURE RATING
FP4 Plus has a speed rating of ISO 125/22º
(125ASA, 22DIN, EI 125/22) 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)
Sensitivity
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.
Wavelength nm
FILTER FACTORS
FP4 Plus film may be used with all types of filters
(eg 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.
Cameras with through-the-lens metering will usually
adjust the exposure automatically when using
filters. With some automatic exposure cameras, the
correction given for deep red and orange filters
can produce negatives under exposed by as much
as 11/2 stops.
Some products in this fact sheet
might not be available in your country
FP4 Plus
MAKING LONG EXPOSURES
For exposures between 1/2 and 1/10 000 second, no
adjustments are needed for reciprocity law failure.
When exposures longer than 1/2 second are given,
FP4 Plus, along with other films, needs to be given
more exposure than indicated by a meter. Use the
graph to calculate the increased exposure time which
should be given once the measured time is known.
175
150
125
75
50
25
5
10
15
20
25
Adjusted exposure time (sec)
100
30
Measured exposure time (sec)
CHOOSING THE BEST ILFORD DEVELOPER FOR THE JOB
Manual processing (eg spiral tank, dish/tray, deep tank) and rotary processors
Liquid
Powder
Best overall image quality
ILFOTEC DD-X
ID-11 (stock)
Finest grain
ILFOTEC DD-X
PERCEPTOL (stock)
Maximum sharpness
ILFOSOL S
ID-11 (1+3)
Maximum film speed
ILFOTEC DD-X
MICROPHEN (stock)
One-shot convenience
ILFOSOL S
ILFOTEC DD-X
ID-11 (1+1)
MICROPHEN (1+1)
Economy
ILFOTEC LC29 (1+29)
ID-11 (1+3)
MICROPHEN (1+3)
Rapid processing
ILFOTEC HC (1+15)
–
Replenishable
ILFOTEC HC
ID-11
Dip and dunk
ILFOTEC DD
ID-11
ILFOTEC HC
Best overall image quality (liquid) and long tank life
Best overall image quality (powder) and long tank life
Flexible process time, range of dilutions and economy
Short leader
ILFOTEC RT RAPID
ILFOTEC HC
Rapid processing, best overall image quality and
long tank life
Range of dilutions, flexibility and economy
ILFOTEC RT RAPID
Rapid processing
Machine processing
Roller transport
Some products in this fact sheet
might not be available in your country
ILFORD
FP4 Plus
DEVELOPMENT TIMES
The table 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. Where continuous agitation
is used for manual processing (as in a dish/tray or
with some types of developing tank), reduce these
times by up to 15%. For use in rotary processors
without a pre-rinse, reduce the spiral tank
development times by up to 15%. A pre-rinse is
not recommended as it can lead to uneven
processing.
35mm film, Rollfilm & Sheet film
Dilution
Meter setting
EI 50/18
EI 125/22
EI 200/24
Spiral tank, deep tank, dip and dunk machines (min/20ºC/68ºF)
ILFORD developer
ILFOTEC DD-X
1+4
8
10
12
ILFOSOL S
1+9
1+14
41/2
71/2
61/2
91/2
71/2
–
ILFOTEC HC
1+15
1+31
–
6
4
8
5
9
ILFOTEC LC29
1+9
1+19
1+29
–
6
8
4
8
12
5
9
–
ID-11
stock
1+1
1+3
61/2
8
17
81/2
11
20
10
15
–
MICROPHEN
stock
1+1
1+3
–
–
–
8
10
14
9
14
18
PERCEPTOL
stock
1+1
1+3
9
13
17
12
15
21
–
–
–
stock
–
4
6
Non-ILFORD developer
Acufine Acufine
Agfa Refinal
stock
–
6
9
Agfa Rodinal
1+25
1+50
–
–
9
15
13
20
Kodak D-76
stock
1+1
1+3
6
9
14
8
11
16
9
15
20
Kodak HC-110
A
B
–
6
41/2
9
6
12
Kodak Microdol-X
stock
1+3
10
17
15
23
–
–
Kodak T-Max
1+4
–
4
5
Paterson Acutol
1+10
7
9
12
Tetenal Ultrafin
1+10
1+20
–
–
7
11
9
14
Tetenal Ultrafin Plus
1+4
–
6
9
–
7
–
–
71/2
–
Dip and dunk machines (min/24ºC/75ºF)
ILFOTEC DD
Kodak T-Max RS
1+4
stock
ILFOLAB FP40, roller transport and short leader machines (sec)
ILFOTEC RT RAPID
stock/26ºC/78ºF
–
50
–
ILFOTEC HC
1+11/24ºC/75ºF
–
85
–
Kodak Duraflo RT
stock/26ºC/78ºF
–
50
–
Some products in this fact sheet
might not be available in your country
FP4 Plus
Note Development times may need adjusting to
suit individual processing systems and working
practices. If an established system is producing
good results, adjust the recommended
development times until the desired contrast level is
obtained. Development times in other
manufacturers’ developers are included for your
convenience, and are only a general guide. Other
manufacturers can and do change their product
specifications from time to time, and the
development times may change as a result.
PROCESSING AT DIFFERENT
TEMPERATURES
FP4 Plus film can be processed over a range of
temperatures. Development at 20oC/68°F is
recommended and the times are given in the
development times table. If development is not
possible at 20oC/68°F, the following chart can be
used. The chart is based at 20oC/68°F for a
general developer, and can be used to give an
estimate of development times at temperatures
around 20oC/68°F
METER SETTINGS BELOW EI 50/18
AND ABOVE EI 200/24
If FP4 Plus has been inadvertently exposed at
settings below EI 50/18 or above EI 200/24, the
following guide will ensure usable negatives are
obtained. Obviously, the quality of negatives
processed in this way will not be so high as
conventionally processed ones.
For example, if 4 minutes at 20oC/68°F is
recommended, the time at 23oC/73°F will be 3
minutes and the time at 16oC/61°F will be 6
minutes.
Manual processing (min/20ºC/68ºF) –
accidental exposure only
Dilution Meter setting
EI
EI
25/15 400/27
and
and
below
above
o
Temperature ( C/ F)
ILFORD
developer
MICROPHEN
PERCEPTOL
o
35mm film
stock
–
16
stock
81/2
–
Rollfilm and sheet film
stock
–
16
PERCEPTOL
stock
81/2
–
New development time (min)
Note The chart can only be used as a guide
because different developers and processing
techniques can vary the results.
CHARACTERISTIC CURVE
Density
MICROPHEN
Relative log exposure
FP4 Plus rollfilm developed in ILFORD ILFOTEC HC
(1+31) for 8 minutes at 20oC/68°F with
intermittent agitation. This curve is also
representative of the 35mm and sheet film formats.
Some products in this fact sheet
might not be available in your country
FP4 Plus
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. FP4
Plus is very robust in processing and will tolerate
less than ideal processing conditions. Also, it will
not contaminate the processing chemicals.
Safelight recommendations
Handle FP4 Plus film in total darkness. For very
brief inspections during processing, use the ILFORD
908 (very dark green) safelight filter, with a 15W
bulb, fitted in a darkroom lamp (such as the
ILFORD DL10 or DL20). Do not allow direct
lighting from the safelight to fall on the film.
Agitation
Intermittent agitation is recommended for use in
spiral tanks and deep tanks. Continuous agitation
is recommended in dishes/trays (by rocking the
dish/tray or by interleaving the sheets). With spiral
tanks, invert the tank four times during the first 10
seconds, then invert the tank four times again
during the first 10 seconds of each further minute.
Otherwise, follow the recommendations given by
the processing equipment manufacturer.
Fixation
After development, rinse the film in water or an
acid stop bath (ILFORD ILFOSTOP or ILFOSTOP
PRO) and fix in ILFORD HYPAM or ILFORD
UNIVERSAL RAPID fixer (1+4) for 2–4 minutes at
20ºC/68ºF. A hardener is recommended only
when processing at high temperatures (above
30ºC/86ºF) or in a roller transport processor.
5 Drain and refill it for the third time and invert the
tank twenty times. Drain the water away.
A final rinse in water to which a few drops of
ILFORD ILFOTOL (1+200) wetting agent have been
added will aid rapid and uniform drying.
Drying
To avoid drying marks, use a clean squeegee or
chamois cloth to wipe FP4 Plus film before hanging
it to dry. Dry FP4 Plus at 30–40ºC/86–104ºF in a
drying cabinet or at room temperature in a clean
dust-free area.
STORAGE
Store FP4 Plus in a cool (10–20ºC/50–68ºF), dry
place in its original packaging.
Exposed film
Once exposed, process FP4 Plus as soon as
practical. Images on exposed but unprocessed film
will not degrade for up to several months when
stored as recommended.
Negatives
Store processed negatives in a cool
(10–20ºC/50–68ºF), dry place, in the dark.
Suitable storage sleeves include those made of
cellulose triacetate, Mylar, paper (pH6.5–7.5) or
inert polyester.
A wide range of fact sheets is available which describe and
give guidance on using ILFORD products. Some products in
this fact sheet might not be available in your country.
Washing
Where a non-hardening fixer, such as HYPAM or
UNIVERSAL RAPID, has been used, wash the film
in running water for 5–10 minutes at a
temperature within 5ºC/9ºF of the processing
temperature.
For spiral tank use, when a non-hardening fixer
has been used, the following method of washing is
recommended. This method of washing is faster,
uses less water yet still gives negatives suitable for
long term storage.
1 Process the film in a spiral tank.
2 Fix it using HYPAM or UNIVERSAL RAPID fixer.
3 After fixation, fill the tank with water at the same
temperature as the processing solutions, and invert
it five times.
4 Drain the water away and refill. Invert the tank
ten times.
Some products in this fact sheet
might not be available in your country
ILFORD Imaging UK Limited, Town Lane, Mobberley
Knutsford, Cheshire WA16 7JL, England
www.ILFORD.com
94117D.www
November 2000
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