Ilford
Fine grain monochrome style with smooth tonality
细颗粒单色风格，层次平滑
Specifications
ISO
100
Type
Black & White
Process
B&W
Brand Color
#6B6B6B
Reciprocity Failure Compensation
Long exposures require compensation for reciprocity failure. Use these values as a starting point when shooting with . For more details, see our Reciprocity Failure Guide. FilmMeter's Light Metering feature can automatically apply these corrections.
Official DataIlford P Factor Formula
This film uses the Ilford reciprocity formula: Corrected Time = Metered TimeP, where P = 1.26.
| Metered Time | Corrected Time | Difference (approx.) |
|---|---|---|
| 1s | 1s | 1.0x |
| 2s | 2.4s | 1.2.20.0x |
| 5s | 7s | 1.40x |
| 10s | 18s | 1.80x |
| 20s | 44s | 2.20x |
| 30s | 1m 10s | 2.33x |
| 1m 0s | 2m 48s | 2.80x |
| 2m 0s | 6m 43s | 3.35x |
Data sourced from official manufacturer documentation.