Technical Data Sheet

Page 4 of 6 No

2018

ELTA 100 PROFESSIONAL Technical Information

PROCESSING

Development Times

If Delta 100 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.

Note Development times may need adjusting to suit individual processing systems and working practices. If an

established system is producing good results, adjust the 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

Delta 100 Professional 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.

CHARACTERISTIC CURVE

100 DELTA Professional roll film developed in ILFORD ID-11

stock for 8½ minutes at 20ºC/68ºF with intermittent

agitation. This curve is also representative of the 35mm and

sheet film formats.

Manual Processing (min @ 20°C/68°F) – accidental

exposure only

Ilford

Developer

Dilution Meter Setting

EI 25/15

and below

EI 400/27

and above

Microphen Stoc

- 10

Perceptol Stoc

9 -