Development time
Kodak Portra 400 in Bellini C-41 Monopart Kit
3:15 at 38°C, stock dilution, box speed.
Start timer · 3:15Time
3:15
Standard
Dilution
Stock
Temperature
38°C
Box speed
ISO 400
C-41
Development time
| Dilution | EI | Time | Temp | Agitation | Timer |
|---|---|---|---|---|---|
| Stock | 400 | 3:15 | 38°C / 100°F | Standard | Start timer |
EI is the speed the film was rated at when shooting. Times marked “not yet verified” come from secondary sources and haven’t been checked against a manufacturer datasheet.
Other temperatures
Colour developers run at 38°C with a tight tolerance of around ±0.3°C, so there’s no reliable temperature chart. If you can’t hold the temperature, follow your kit’s instructions for its lower-temperature times.
Mixing
| Dilution | 300 ml (one 35mm roll) | 500 ml (one 120 roll) |
|---|---|---|
| Stock | Use as mixed, undiluted | Use as mixed, undiluted |
How they work together
- Kodak Portra 400
- Widely regarded as the industry standard for professional colour work. Vision3 technology provides exceptionally fine grain and impressive exposure latitude.
- Notes on this pairing
- 38 ±0.2 °C, films 1–4 of the 1 L kit (5–8: 3:30, 9–12: 3:45, 13–16: 4:00). Continuous agitation for 15 s, then 5 s every 30 s.
Portra 400 in other developers
Adox C-TEC 41
3:15
Stock · EI 400 · 38°C · 4 variants
Compard Digibase C-41
21:00
Stock · EI 400 · 20°C · 4 variants
Fuji Hunt C-41 Film X-Press Kit
3:15
Stock · EI 400 · 38°C
Jobo C-41 Color Negative Developer Kit
3:15
Stock · EI 400 · 38°C
Kodak Color Negative C-41 Kit
3:15
Stock · EI 400 · 38°C
Tetenal Colortec C-41
3:15
Stock · EI 400 · 38°C · 5 variants
Unicolor C-41
3:30
Stock · EI 400 · 38.9°C · 5 variants