September 2002

DELTA

PROFESSIONAL

ISO 100/21º, FINE GRAIN, BLACK AND WHITE PROFESSIONAL FILM

FOR SUPERB PRINT QUALITY

ILFORD 100 DELTA PROFESSIONAL is a medium speed, fine grain, black and white film, ideal for pictorial and fine art photography.

SPECTRAL SENSITIVITY

Wedge spectrogram to tungsten light

(2850K)

100 DELTA 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). 100 DELTA Professional

35mm film is supplied in DX coded cassettes, suitable for all 35mm cameras.

100 DELTA 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.

100 DELTA Professional sheet film is coated on

0.180mm/7-mil polyester base with an antihalation 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.

Wavelength nm

FILTER FACTORS

100 DELTA Professional 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 1 1/2 stops.

EXPOSURE RATING

100 DELTA Professional has a speed rating of ISO

100/21 º (100ASA, 21DIN, EI 100/21) to daylight.

Best results are obtained at EI 100/21, 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 100 DELTA 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 6

100 DELTA 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,

100 DELTA 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.

100

75

50

25

175

150

125

5 10 15 20

Measured exposure time (sec)

25 30

CHOOSING THE BEST ILFORD DEVELOPER FOR THE JOB

Manual processing (eg spiral tank, dish, deep tank) and rotary processors

Liquid

Best overall image quality ILFOTEC DD-X

Finest grain (EI 100/21) ILFOTEC DD-X

Finest grain (EI 50/18) ILFOTEC DD-X

Maximum sharpness

Maximum film speed

(EI 200/24)

One-shot convenience

Economy

ILFOTEC HC (1+31)

ILFOTEC DD-X

ILFOSOL S (1+14)

ILFOTEC DD-X

ILFOTEC LC29 (1+29)

Replenishable ILFOTEC HC

Powder

ID-11 (stock)

PERCEPTOL (1+1)

PERCEPTOL (stock)

ID-11 (1+3)

MICROPHEN (stock)

ID-11 (1+1)

MICROPHEN (1+1)

ID-11 (1+3)

MICROPHEN (1+3)

ID-11

MICROPHEN

PERCEPTOL

Machine processing

Dip and dunk

Short leader

Roller transport

ILFOTEC DD

ID-11

MICROPHEN

ILFOTEC HC

ILFOTEC RT RAPID

ILFOTEC HC

ILFOTEC RT RAPID

Best overall image quality (liquid) and long tank life

Best overall image quality (powder) and long tank life

Maximum film speed 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

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100 DELTA PROFESSIONAL

DEVELOPMENT TIMES

The table gives development times for both manual and machine processing 100 DELTA Professional.

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

ILFORD developer Dilution 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

Meter setting

EI 50/18 EI 100/21 EI 200/24

Spiral tank, deep tank, dip and dunk machines (min/20°C/68°F)

ID-11

MICROPHEN stock

1+1

1+3 stock

1+1

1+3

7

10

15

–

–

–

8 1/2 10 1/2

11 13

20 –

6 1/2

10

14

8

14

20

PERCEPTOL

ILFOTEC DD-X

ILFOSOL S

ILFOTEC HC

ILFOTEC LC29 stock 12

1+1

1+3

13

16

1+4 9 1/2

1+9

1+14

1+31

1+19

1+29

4

6

5

5

5

1/2

1/2

1/2

15

17

22

12

6

10

6

6

7 1/2

–

–

8

–

–

–

14

8

10

Non-ILFORD developer

Acufine Acufine

Agfa Refinal

Agfa Rodinal

Fuji Super Prodol

Kodak D-76

Kodak HC-110

Kodak Microdol-X

Kodak T-Max

Paterson Acutol

Tetenal Ultrafin stock stock

1+25

1+50 stock

1+1 stock

1+1

1+3

B stock

1+3

1+4

1+10

12

16

6

–

–

–

–

–

7

10

7

9 1/2

14

5

15

22

7

16

9

12

22

6

–

5 1/2

5

8

9

14

–

–

8

–

11

14

–

8

5 1/2

6 1/2

–

–

6 1/2

10

Tetenal Ultrafin Plus

Tetenal Ultrafin SF

Kodak Xtol

1+10

1+20

1+4 stock stock

–

–

–

–

6 1/2

6

9 1/2

5

5

7 1/2

8

11 1/2

7

7

9 1/2

Dip and dunk machines (min/24ºC/°F)

ILFOTEC DD

Kodak T-Max RS

Kodak Xtol

1+4 stock stock

8

5

–

9 1/2

6

6 1/2

12 1/2

8

9 1/2

ILFOLAB FP40, roller transport and short leader machines (sec/26ºC/79°F)

ILFOTEC RT RAPID

Kodak Duraflo RT

1+1+2

1+1+5 stock

–

40

–

40

56

45

50

75

55

Page 3 of 6

100 DELTA PROFESSIONAL

If 100 DELTA Professional 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.

Manual processing (min/20ºC/68ºF) – accidental exposure only

Dilution

MICROPHEN stock

PERCEPTOL stock

–

9

Meter setting

EI 25/15 EI 400/27 and below and above

10

–

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

100 DELTA Professional film can be processed over a range of temperatures. Development times at temperatures other than 20ºC/68ºF may be calculated from the chart below.

For example, if 4 minutes at 20ºC/68ºF is recommended, the time at 23ºC/73ºF will be 3 minutes and the time at 16ºC/61ºF will be 6 minutes.

New development time (min)

CHARACTERISTIC CURVE

Relative log exposure

100 DELTA Professional rollfilm developed in

ILFORD ID-11 stock for 8 1/2 minutes at 20ºC/68ºF with intermittent agitation. This curve is also representative of the 35mm and sheet film formats.

New development time (min)

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PROCESSING

100 DELTA Professional 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 100 DELTA Professional however, slightly longer times than used with conventional film are recommended for best results.

Safelight recommendations

Handle 100 DELTA 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.

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. 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 (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.

ILFORD Stop

Bath

Dilution

Temperature range

Time (seconds) at 20ºC (68ºF)

Capacity films/litre

(unreplenished)

ILFOSTOP

1+19

18–24ºC

(64–75ºF)

10

ILFOSTOP PRO

1+19

18–24ºC

(64–75ºF)

10

15x(135–36) 22x(135–36)

100 DELTA PROFESSIONAL

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 ILFORD HYPAM & ILFORD

ILFORD RAPID FIXER ILFOFIX II

Dilution 1+4 stock

Temperature range

Time (mins) at 20ºC (68ºF)

18–24ºC

(64–75ºF)

2–5

18–24ºC

(64–75ºF)

4–8

Capacity films/litre

(unreplenished)

24x(135–36) 24x(135–36)

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.

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100 DELTA PROFESSIONAL

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.

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 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 100 DELTA Professional film before hanging it to dry. Dry 100 DELTA

Professional at 30–40ºC/86-104ºF in a drying cabinet or at room temperature in a clean dustfree area.

STORAGE

Store 100 DELTA Professional in a cool

(10–20ºC/50-68ºF), dry place in its original packaging.

Exposed film

Once exposed, process 100 DELTA Professional 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 or paper (pH 6.5–7.5) 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.

Page 6 of 6

ILFORD Imaging UK Limited, Town Lane, Mobberley

Knutsford, Cheshire WA16 7JL, England www.ilford.com

95026A.www

September 2002