HARMAN technology Limited
TECHNICAL INFORMATION
ISO 50/18° BLACK AND WHITE PROFESSIONAL FILM FOR
HIGH PRINT QUALITY AND FLEXIBILITY IN USE
ILFORD PAN F Plus is an extremely fine grain black and white film. It has outstanding resolution, sharpness
and edge contrast. These characteristics make it the natural choice where fine detail and lack of grain are more
important than film speed. Mural size enlargements from PAN F Plus negatives show an outstanding range of
tone and detail when the film is carefully exposed and processed.
PAN F Plus is compatible with all major processing systems, including those which give the standard short fixing
and washing times.
PAN F Plus 35mm film is coated on 0.125mm/5-mil acetate base and is available in 36 exposure cassettes, or
in bulk lengths of 17 and 30.5 metres (55 and 100ft). PAN F Plus 35mm film is supplied in DX coded cassettes,
suitable for all 35mm cameras.
PAN F 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 in120 lengths and is edge numbered 1 to 19.
EXPOSURE RATING
PAN F Plus has a speed rating of ISO 50/18° (50ASA, 18DIN, EI 50/18°) to daylight. The ISO speed rating
was measured using ILFORD ID-11 developer at 20°C/68°F with intermittent agitation in a spiral tank.
Best results are obtained at EI 50/18°, but good image quality will also be obtained when PAN F Plus is
exposed at EI 25/15°.
It should be noted that the exposure index (EI) range recommended for PAN F Plus is based on a practical
evaluation of film speed and is not based on foot speed, as is the ISO standard.
Important Note: Once exposed, process PAN F Plus as soon as practical – we recommend within 3 months.
SPECTRAL SENSITIVITY
Wedge spectrogram to tungsten light
(2850K)
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Dec 2017
PANF PLUS Technical Information
FILTER FACTORS
PAN F 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 1½ stops.
MAKING LONG EXPOSURES
For exposures between ½ and 1/10 000 second, no
adjustments are needed for reciprocity law failure.
When exposures longer than ½ second are given, PAN
F 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.
The graph is based on the formula Ta = Tm1.33
Ta = Adjusted Time
Tm = Measured Time
CHOOSING THE BEST ILFORD DEVELOPER FOR THE JOB
Manual processing Spiral tank, dish/tray, deep tank
Including rotary processors
Liquid
Best overall image quality ILFOTEC DD-X
Finest grain
ILFOTEC DD-X
Maximum sharpness
One-shot convenience
Economy
ILFOTEC DD-X
ILFOSOL 3
ILFOTEC DD-X
ILFOTEC LC29 (1+29)
Rapid processing
Replenishable
ILFOTEC HC (1+31)
ILFOTEC HC
Machine Processing
Dip and dunk
Short leader
ILFOTEC DD
ID-11
ILFOTEC HC
ILFOTEC RT RAPID
Roller transport
ILFOTEC HC
ILFOTEC RT RAPID
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Powder
ID-11 (stock)
PERCEPTOL (stock)
ID-11 (1+3)
ID-11 (1+1)
MICROPHEN (1+1)
ID-11 (1+3)
MICROPHEN (1+3)
–
ID-11
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
Rapid processing, best overall image quality and
long tank life
Range of dilutions, flexibility and economy
Rapid processing
Dec 2017
PANF PLUS Technical Information
DEVELOPMENT TIMES
The table below gives development times for both manual and machine processing PAN F 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 to15%. A pre-rinse is not recommended as it can lead to uneven processing.
ILFORD developer
Dilution
35mm and Roll Film
Meter setting
EI 25/15
EI 50/18
o
EI 64/19
o
Spiral tank, deep tank, dip and dunk machines (min/20 C/68 F)
ILFOTEC DD-X
1+4
7
8
ILFOSOL 3
1+9
–
–
1+14
–
41/2
ILFOTEC HC
1+31
–
4
ILFOTEC LC29
1+19
–
4
51/2
1+29
–
–
–
–
–
–
–
ID-11
stock
1+1
1+3
41/2
6
121/2
61/2
81/2
15
–
–
–
MICROPHEN
stock
1+1
1+3
–
–
–
41/2
6
11
6
9
141/2
stock
1+1
1+3
Non-ILFORD Developers
Acufine Acufine
stock
Agfa Rodinal
1+25
1+50
9
101/2
15
14
15
17
–
–
–
–
–
–
31/2
6
11
–
–
–
Kodak D-76
stock
1+1
1+3
41/2
6
121/2
61/2
81/2
15
–
–
–
Kodak HC-110
Kodak T-Max
Tetenal Ultrafin
B
1+4
1+10
1+20
–
–
–
–
4
4
4
8
–
–
–
–
Tetenal Ultrafin Plus
Kodak Xtol
1+4
stock
–
51/2
5
63/4
–
–
51/2
3
6
–
–
–
PERCEPTOL
Dip and dunk machines (min/24oC/75oF)
ILFOTEC DD
1+4
41/2
Kodak T-Max RS
stock
–
Kodak Xtol
stock
41/2
ILFOLAB FP40, roller transport and short leader machines (sec)
ILFOTEC RT RAPID
–
40
–
1+1+2/26ºC/79oF
1+1+5/26ºC/79oF
45
50
–
ILFOTEC HC
Page 3 of 6
1+11/24ºC/75oF
50
65
–
Dec 2017
PANF PLUS Technical Information
PROCESSING
Development Times
If PAN F Plus has been inadvertently
exposed at settings below EI 25/15 or
above EI 64/19, 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.
Manual Processing (min @ 20°C/68°F) – accidental
exposure only
Ilford
Dilution
Meter Setting
Developer
EI 12/12
EI 200/24
EI 100/21
and below
and above
Microphen Stock
8
12
ID-11
Stock
4
-
Note Development times may need adjusting to suit individual processing systems and working practices. If an
established system is producing 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
PAN F Plus film can be processed over a range of temperatures. Development times at temperatures other than
20°C/68°F may be calculated from the chart below. For example, if 4 minutes at 20°C/68°F is recommended,
the time at 23°C/73°F will be 3 minutes and the time at 16°C/61°F will be 6 minutes.
PAN F Plus roll film developed in ILFORD ILFOTEC HC
(1+31) for 4 minutes at 20°C/68°F with intermittent
agitation. This curve is also representative of the 35mm
film format.
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Dec 2017
PANF PLUS Technical Information
PROCESSING
PAN F 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. PAN F 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 PAN F Plus film in total darkness.
Agitation
Intermittent agitation is recommended for use in spiral tanks and deep tanks. 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.
Stop, fix, wash and rinse
For best results it is recommended that all process solutions are kept at the same temperature or at least within
5ºC (9ºF) of the developer temperature.
Stop Bath
After development the film can be rinsed in
water but we recommend that an acid stop
bath is used such as ILFORD ILFOSTOP.
ILFOSTOP is also recommended for all
machine processing applications. When tanks
or dishes (trays) of process solutions are in use
a stop bath immediately stops development
and reduces carry over of excess developer
into the fixer bath. This helps to maintain the
activity and prolong the life of the fixer
solution.
ILFORD ILFOSTOP
Dilution
1+19
Temperature Range
18–24ºC (64–75ºF)
Time (sec) at 20ºC (68ºF)
10
Capacity (films per litre,
unreplenished)
15x (135-36)
The process time given is the minimum required, if necessary a longer time may be used and should not cause
any process problems provided it is not excessive. The recommended fixers are ILFORD RAPID FIXER and
ILFORD HYPAM, both are non-hardening fixers.
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.
ILFORD RAPID OR HYPAM
FIXERS
Dilution
1+4
Temperature Range
18–24ºC (64–75ºF)
Time (mins) at 20ºC (68ºF)
2-5
Capacity (films per litre,
unreplenished)
24x (135-36)
Note: For spiral tank use, 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.
After fixing, fill the spiral tank with water at the same temperature, +/– 5ºC (9ºF), as the processing solutions
and invert it five times. Drain the water away and refill. Invert the tank ten times. Once more drain the water
away and refill. Finally, invert the tank twenty times and drain the water away.
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Dec 2017
PANF PLUS Technical Information
Rinse
For a final rinse use ILFORD ILFOTOL wetting agent added to water, it helps the film to dry rapidly and evenly.
Start by using 5ml per litre of rinse water (1+200), however the amount of ILFOTOL used may need some
adjustment depending on the local water quality and drying method. Too little or too much wetting agent can
lead to uneven drying. Remove excess rinse solution from the film before drying.
Drying
To avoid drying marks, use a clean squeegee or chamois cloth to wipe PAN F Plus film before hanging it to dry.
Dry PAN F Plus at 30–40°C/86-104°F in a drying cabinet or at room temperature in a clean dust-free area.
STORAGE
Store PAN F Plus in a cool (10–20°C/50-68°F), dry place in its original packaging.
Exposed film
Once exposed, process PAN F Plus as soon as practical – ideally within 3 months.
Exposed films should always be stored in cool, dry conditions - as recommended above.
Negatives
Store processed negatives in a cool (10–20°C/50-68°F), 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 PHOTO products.
Some products in this fact sheet might not be available in your country.
HARMAN technology Limited, Town Lane, Mobberley,
Knutsford, Cheshire WA16 7JL, England
www.ilfordphoto.com
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Dec 2017
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