September 2002
FACT SHEET
400
PROFESSIONAL
ISO 400/27º, FINE GRAIN, BLACK AND WHITE PROFESSIONAL FILM
FOR SUPERB PRINT QUALITY
Although rated at ISO 400/27º, DELTA 400
Professional film 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.
DELTA 400 Professional 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
30.5 metres (100ft). DELTA 400 Professional
35mm film is supplied in DX coded cassettes,
suitable for all 35mm cameras.
DELTA 400 Professional rollfilm is coated on
0.110mm/4-mil clear acetate base with an antihalation backing which clears during
development. It is available in 120 lengths and is
edge numbered 1 to 19.
EXPOSURE RATING
DELTA 400 Professional has a speed rating of ISO
400/27° (400ASA, 27DIN, EI 400/27) 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 will be obtained at normal contrast,
but good image quality will also be obtained at
meter settings from EI 200/24 to EI 3200/36.
It should be noted that the exposure index (EI)
range recommended for DELTA 400 Professional is
based on a practical evaluation of film speed and
is not based on foot speed, as is the ISO
standard.
Page 1 of 7
SPECTRAL SENSITIVITY
Wedge spectrogram to tungsten light
(2850K)
Sensitivity
ILFORD DELTA 400 PROFESSIONAL is a fast, fine
grain, black and white professional film. It is ideal
for action and available light photography, and
also gives fine grain results for pictorial and fine
art photography. DELTA 400 Professional film
gives excellent performance in seasoned
developers.
Wavelength nm
FILTER FACTORS
DELTA 400 Professional film can 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.
DELTA 400 PROFESSIONAL
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, DELTA 400
Professional, 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.
CHOOSING THE BEST ILFORD
DEVELOPER FOR THE JOB
DELTA 400 Professional will give good results
in a wide range of developers when exposed
at meter settings up to EI 3200/36. After
choosing your developer, refer to the
development times table to check the meter
setting needed with that developer.
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
ILFOTEC DD-X
ID-11 (stock)
Finest grain normal contrast ILFOTEC DD-X
ID-11 (stock)
Finest grain (EI 200/24)
ILFOTEC DD-X
PERCEPTOL (stock)
Maximum sharpness
ILFOSOL S (1+9)
ID-11 (1+3)
Maximum film speed
(EI 3200/36)
ILFOTEC DD-X
MICROPHEN (stock)
One-shot convenience
ILFOSOL S (1+9)
ILFOTEC DD-X
ID-11 (1+1)
MICROPHEN (1+1)
Economy
ILFOSOL S (1+14)
ILFOTEC LC29 (1+29)
ID-11 (1+3)
MICROPHEN (1+3)
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
Best overall image quality
Machine processing
Roller transport
Page 2 of 7
DELTA 400 PROFESSIONAL
DEVELOPMENT TIMES
The table gives development times for processing
DELTA 400 Professional film. The times in bold will
produce negatives of normal contrast ( 0.62).
The development times are intended as a guide
and may be altered if a different result is needed.
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 because it can lead to uneven
processing.
For manual processing in spiral tanks and deep
tanks, the development times are based on
35mm film and rollfilm
ILFORD developer
Dilution
Meter setting (EI)
200/24 250/25 320/26 400/27 500/28 800/30 1600/33 3200/36
Spiral tanks and deep tanks - unreplenished developers (min/20°C/68°F)
ID–11
stock
1+1
1+3
7
10
18
–
–
–
–
–
–
91/2
14
–
–
–
–
111/2
171/2
–
141/2
–
–
19
–
–
MICROPHEN
stock
1+1
1+3
5
81/2
16
–
–
–
–
–
–
61/2
111/2
–
71/2
131/2
–
81/2
151/2
–
101/2
19
–
14
–
–
PERCEPTOL
stock
1+1
1+3
10
121/2
181/2
12
–
–
–
151/2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ILFOTEC DD–X
1+4
6
–
–
8
91/2
101/2
131/2
18
13
–
ILFOTEC HC
1+15
1+31
–
5
–
–
4
–
–
71/2
–
–
51/2
10
71/2
131/2
ILFOTEC LC29
1+19
1+29
5
81/2
–
–
–
–
71/2
111/2
–
–
10
17
131/2
–
–
–
ILFOSOL S
1+9
1+14
61/2
10
–
–
–
–
9
13
–
–
14
–
–
–
–
–
Non-ILFORD developer
Agfa Rodinal
1+25
1+50
6
111/2
–
–
–
–
9
20
–
–
–
–
–
–
–
–
Kodak D–76
stock
1+1
1+3
7
10
18
–
–
–
–
–
–
91/2
14
–
–
–
–
111/2
171/2
–
141/2
–
–
19
–
–
Kodak HC–110
A
B
–
5
–
–
4
–
–
71/2
–
–
51/2
10
71/2
131/2
13
–
Kodak Microdol X
stock
1+1
1+3
11
141/2
–
–
–
–
131/2
161/2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Kodak T–Max
1+4
5
–
–
61/2
7
81/2
101/2
131/2
Kodak Xtol
stock
1+1
6
9
–
–
–
–
71/2
111/2
81/2
13
10
151/2
13
20
17
–
Acufine
stock
7
–
–
9
11
13
16
–
131/2
Tetenal Ultrafin SF
stock
1+1
8
14
–
–
–
–
10
19
12
–
–
17
–
20
–
Tetenal Ultrafin Plus
1+4
6
–
–
71/2
10
12
161/2
–
Agfa Atomal FF
stock
8
9
–
–
–
–
–
–
Dip and dunk machines and deep tanks - replenished developers (min)
ILFOTEC DD
1+4
6
(24ºC/75ºF)
–
–
7
–
10
13
14
Kodak T-Max RS
stock
–
(22ºC/72ºF)
–
–
5
–
61/2
9
121/2
Kodak Xtol
stock
51/2
(24ºC/75ºF)
–
–
7
–
81/2
11
14
Page 3 of 7
DELTA 400 PROFESSIONAL
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.
Note 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.
35mm film and rollfilm
Dilution
Meter setting (EI)
200/24 250/25 320/26 400/27 500/28 800/30 1600/33 3200/36
Spiral tanks and deep tanks - unreplenished developers (min/24°C/75°F)
ILFORD developer
ID–11
stock
1+1
1+3
51/2
8
14
–
–
–
–
–
–
8
111/2
191/2
–
–
–
9
14
–
111/2
18
–
15
–
–
MICROPHEN
stock
1+1
1+3
4
7
111/2
–
–
–
–
–
–
5
9
16
6
11
20
61/2
12
–
71/2
151/2
–
10
–
–
PERCEPTOL
stock
1+1
1+3
7
9
141/2
9
–
–
–
111/2
171/2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ILFOTEC DD–X
1+4
41/2
–
–
51/2
7
71/2
91/2
13
ILFOTEC HC
1+15
1+31
–
4
–
–
–
–
–
5
–
–
41/2
7
51/2
10
8
–
ILFOTEC LC29
1+19
1+29
4
51/2
–
–
–
–
5
71/2
–
–
7
11
10
16
–
–
ILFOSOL S
1+9
1+14
5
8
–
–
–
–
71/2
111/2
–
–
111/2
17
191/2
–
–
–
Non-ILFORD developer
Agfa Rodinal
1+25
1+50
5
91/2
–
–
–
–
7
16
–
–
16
–
–
–
–
–
Kodak D–76
stock
1+1
1+3
51/2
8
14
–
–
–
–
–
–
8
111/2
191/2
–
–
–
9
14
–
111/2
18
–
15
–
–
Kodak HC–110
A
B
–
4
–
–
–
–
–
5
–
–
41/2
7
51/2
10
8
–
Kodak Microdol X
stock
1+1
1+3
71/2
101/2
151/2
–
–
–
9
121/2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Kodak T–Max
1+4
4
–
–
5
51/2
7
81/2
11
Kodak Xtol
stock
1+1
4
61/2
–
–
–
–
41/2
81/2
6
91/2
71/2
111/2
91/2
14
12
18
Acufine
stock
41/2
–
–
51/2
7
71/2
10
19
Tetenal Ultrafin SF
stock
1+1
51/2
9
–
–
–
–
7
12
8
151/2
9
171/2
11
–
141/2
–
Tetenal Ultrafin Plus
1+4
5
–
–
6
8
81/2
10
131/2
Agfa Atomal FF
stock
5
6
–
–
–
–
–
–
ILFOLAB FP40, roller transport and short leader machines (sec/26°C/79°F)
ILFOTEC RT RAPID
1+1+2
1+1+5
55
65
–
–
–
–
65
78
–
–
71
104
84
127
104
166
Kodak Duraflo RT
stock
–
–
–
65
–
71
84
104
Page 4 of 7
DELTA 400 PROFESSIONAL
PROCESSING AT DIFFERENT
TEMPERATURES
DELTA 400 Professional film can be processed
over a range of temperatures. Development at
20ºC/68ºF or 24ºC/75ºF is recommended and
the times are given in the development times table.
If development is not possible at 20ºC/68ºF or
24ºC/75ºF, the following chart can be used. The
chart is based at 20ºC/68ºF for a general
developer, and can be used to give an estimate of
development times at temperatures around
20ºC/68ºF.
CONTRAST-TIME GRAPHS
The following graphs show the contrast of DELTA
400 Professional negatives when developed over
a range of development times.
ID-11
Contrast (
)
For example, if 6 minutes at 20°C/68ºF is
recommended, the time at 23°C/73ºF will be 41/2
minutes and the time at 16°C/61ºF will be 9
minutes.
Development time (min)
DELTA 400 Professional film developed in ILFORD
ID-11 stock at (1) 24ºC/75ºF and (2) 20ºC/ 68ºF.
Contrast (
)
Temperature (°C)
MICROPHEN
New development time (min)
Development time (min)
DELTA 400 Professional film developed in ILFORD
MICROPHEN stock at (1) 24ºC/75ºF and (2)
20ºC/68ºF.
Contrast (
)
Temperature (°F)
PERCEPTOL
New developoment time (min)
Note The chart can only be used as a guide
because different developers and processing
techniques can vary the results.
Development time (min)
DELTA 400 Professional film developed in ILFORD
PERCEPTOL stock at (1) 24ºC/75ºF and (2)
20ºC/68ºF.
Page 5 of 7
DELTA 400 PROFESSIONAL
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.
Contrast (
)
ILFOTEC DD-X
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.
Development time (min)
DELTA 400 Professional film developed in ILFORD
ILFOTEC DD-X 1+4 at (1) 24ºC/75ºF and (2)
20ºC/68ºF.
CHARACTERISTIC CURVE
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 (with indicator dye) or
ILFOSTOP PRO (without indicator dye). ILFOSTOP
PRO is 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.
Density
ILFORD Stop
Bath
Relative log exposure
DELTA 400 Professional 35mm film developed in
ILFORD ID-11 stock for 8 minutes at 24°C/75ºF
with intermittent agitation.
PROCESSING
DELTA 400 Professional film 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. When fixing DELTA 400 Professional
film, however, slightly longer times than used with
conventional film are recommended for best
results.
Safelight recommendations
Handle DELTA 400 Professional 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.
Dilution
Temperature
range
Time (seconds)
at 20ºC (68ºF)
ILFOSTOP PRO
1+19
1+19
18–24ºC
(64–75ºF)
18–24ºC
(64–75ºF)
10
10
Capacity
films/litre
15x(135–36)
(unreplenished)
22x(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.
Fix
The recommended fixers are ILFORD RAPID FIXER
and ILFORD HYPAM liquid fixers and ILFORD
ILFOFIX II powder fixer,all are non-hardening
fixers.
ILFORD Fixer
Dilution
Temperature
range
Time (mins)
at 20ºC (68ºF)
Capacity
films/litre
(unreplenished)
Page 6 of 7
ILFOSTOP
ILFORD HYPAM &
ILFORD RAPID FIXER
1+4
ILFORD
ILFOFIX II
stock
18–24ºC
(64–75ºF)
18–24ºC
(64–75ºF)
2–5
4–8
24x(135–36)
24x(135–36)
DELTA 400 PROFESSIONAL
WASH
When a non-hardening fixer has been used wash
the films in running water for 5–10 minutes at a
temperature within 5ºC (9ºF) of the process
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.
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.
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.
FIX HARDENER
ILFORD RAPID FIXER and ILFORD ILFOFIX II must
not be used with fix hardeners as they are not
compatible with them. If a fix hardener is required
then only ILFORD HYPAM fixer can be used. Add
ILFORD HYPAM HARDENER to turn HYPAM into a
hardening fixer.
Generally for most applications modern camera
films are sufficiently hardened at manufacture.
Additional hardening from a fixer hardener is not
usually needed or recommended for processing in
spiral tanks, dishes/trays, deep tanks, rotary
processors, dip and dunk (hanger) machines and
short leader card processors, unless the processing
temperature is above 30ºC (86ºF), or poor drying
performance is being experienced. To minimise
the risk of physical damage a fixer hardener may
be needed when using a roller transport film
processor.
the minimum amount of hardener to have some
effect. This is around 3–6 mls of hardener per litre
of working strength HYPAM used. This increases
the film hardness slightly but has a negligible
effect on the fix and wash efficiency. When fix
and wash times are restricted the maximum
amount of HYPAM HARDENER recommended is
10–20ml of hardener per litre of working strength
HYPAM used. This higher amount gives a definite
increase to the hardness of the films processed
and while fixing and washing efficiency are
reduced the films will be adequately fixed and
washed for most purposes.
When fix and wash times can be extended the
maximum amount of HYPAM HARDENER needed
to achieve fully hardened films is 1 part to 40
parts working strength HYPAM i.e. 24 ml per litre.
Drying
To avoid drying marks, use a clean squeegee or
chamois cloth to wipe DELTA 400 Professional film
before hanging it to dry. Dry DELTA 400
Professional film at 30–40°C/86-104ºF in a
drying cabinet or at room temperature in a clean
dust-free area.
STORAGE
Store DELTA 400 Professional film in a cool
(10–20°C/50-68ºF), dry place in its original
packaging.
Exposed film
Once exposed, process DELTA 400 Professional film
as soon as practical. Images on exposed but
unprocessed film will not degrade for several
months when stored as recommended.
Negatives
Store processed negatives in a cool (10–20°C/5068ºF), 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
Using a fix hardener will require the
recommended fix and wash times to be extended.
Depending on the film and processing conditions
the hardened fix time will be between 4 and 10
minutes and the subsequent wash time 10–20
minutes in running water.
The amount of HYPAM HARDENER that can be
added to the fixer is dependant on the film and
process conditions used. In some processors the
full amount of hardener cannot be used as the fix
and wash times cannot be extended adequately.
In these circumstances we recommend starting with
Page 7 of 7
ILFORD Imaging UK Limited, Town Lane, Mobberley
Knutsford, Cheshire WA16 7JL, England
www.ilford.com
00028A.www
September 2002