Film · Black and white negative
Ilford HP5 Plus
In productionBW
Robust all-purpose ISO 400 film with a wide exposure latitude; Ilford's datasheet gives good results from EI 200 to 800 and push processing to EI 3200 with extended development.
- Box speed
- ISO 400
- Process
- BW
- Formats
- 35mm, 120, 4x5, 8x10
- Grain
- Medium
- Latitude
- Excellent
- Reciprocity
- t^1.31
Power-law factor
Characteristics
GrainMedium, level 3 of 4
ContrastMedium, level 2 of 4
LatitudeExcellent, level 4 of 4
Reciprocity failure
Compensation Formula
t' = t1.31
Ilford's published factor P = 1.31: corrected time = metered time ^ 1.31. Ilford says one second or less needs no compensation, and that very long exposures at low light may need some trial and error.
Development times
| Developer | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| ID-11 | stock | 400 | 7m 30s | 20°C / 68°F |
| ID-11 | 1+1 | 400 | 13m | 20°C / 68°F |
| HC-110 | 1+31 | 400 | 5m | 20°C / 68°F |
| Ilfosol 3 | 1+9 | 400 | 6m 30s | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 400 | 9m | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 800 | 10m | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 1600 | 13m | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 3200 | 20m | 20°C / 68°F |
| Rodinal | 1+25 | 400 | 6m | 20°C / 68°F |
| Rodinal | 1+50 | 400 | 11m | 20°C / 68°F |
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Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.