Datasheet

DEL
T
A 400 PROFESSIONAL
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f
7
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.
For example, if 6 minutes at 20°C/68ºF is
recommended, the time at 23°C/73ºF will be 4
1/
2
minutes and the time at 16°C/61ºF will be 9
minutes.
T
emperature (°C)
T
emperature (°F)
Contras
t
( )
Contras
t
( )
Contras
t
( )
New development time (min)
New developoment time (min)
Note The chart can only be used as a guide
because different developers and processing
techniques can vary the results.
CONTRAST-TIME GRAPHS
The following graphs show the contrast of DELTA
400 Professional negatives when developed over
a range of development times.
ID-11
Development time (min)
DELTA 400 Professional film developed in ILFORD
ID-11 stock at (1) 24ºC/75ºF and (2) 20ºC/ 68ºF.
MICROPHEN
Development time (min)
DELTA 400 Professional film developed in ILFORD
MICROPHEN stock at (1) 24ºC/75ºF and (2)
20ºC/68ºF.
PERCEPTOL
Development time (min)
DELTA 400 Professional film developed in ILFORD
PERCEPTOL stock at (1) 24ºC/75ºF and (2)
20ºC/68ºF.