rolllog

Development times

Ilford Delta 400 Professional in Ilford Perceptol

11 times for 1+1, 1+3, stock, EI 200–320, 20–24 °C. From HARMAN technology DELTA 400 PROFESSIONAL Technical Information (2018-11).

Times

1+1 · intermittent

Ilford Delta 400 Professional in Ilford Perceptol 1+1 · intermittent: time in minutes:seconds by exposure index and temperature
EI20 °C24 °C
20012:309:00
32015:3011:30

1+3 · intermittent

Ilford Delta 400 Professional in Ilford Perceptol 1+3 · intermittent: time in minutes:seconds by exposure index and temperature
EI20 °C24 °C
20018:3014:30
320—17:30

Stock · intermittent

Ilford Delta 400 Professional in Ilford Perceptol Stock · intermittent: time in minutes:seconds by exposure index and temperature
EI20 °C24 °C
20010:007:00
25012:009:00

Source: HARMAN technology DELTA 400 PROFESSIONAL Technical Information (2018-11)

Time in min:sec. A dash means the source gives no time for that combination; rolllog doesn't fill gaps. These are starting points: test with your own process.

Ilford Delta 400 Professional in other developers

Other films in Ilford Perceptol

Same data from the API

curl "https://rolllog.io/api/v1/films/ilford-delta-400/dev-times?developer=ilford-perceptol"

All of Ilford Delta 400 Professional: exposure, reciprocity, formats and prices.