Film · Colour negative
Kodak Portra 400
Kodak calls it the world's finest-grain high-speed colour negative film, at true ISO 400 with natural skin tones and wide-ranging lighting performance (Kodak E-4050, Jan 2025). Made with Kodak's T-Grain emulsions; sold in 135, 120 and sheets.
Datasheet E-4050 (Jan 2025) is issued by Kodak Alaris; Eastman Kodak separately sells Ektacolor Pro 400 from March 2026 (see that record). Kodak's pages do not say how the two relate.
- Box speed
- ISO 400
- Process
- C-41
- Formats
- 35mm, 120, 4x5, 8x10
- Grain
- Very fine
- Latitude
- Excellent
- Reciprocity
- Not published
Characteristics
Reciprocity failure
No official data available. The manufacturer hasn't published reciprocity specifications for this film.
For long exposures, try starting with a 1.3 exponent (t' = t1.3) as a baseline and bracket your shots. This is a reasonable middle ground that works for many films.
Kodak E-4050 (Jan 2025) advises no filter correction or exposure compensation for exposures from 1/10,000 s to 1 s and says to make tests for longer exposures. It publishes no figures beyond 1 s, so none are given here. Bracket long exposures.
Development times
| Developer | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| Fuji Hunt C-41 Film X-Press Kit | stock | 400 | 3m 15s | 38°C / 100°F |
| Kodak Color Negative C-41 Kit | stock | 400 | 3m 15s | 38°C / 100°F |
| Jobo C-41 Color Negative Developer Kit | stock | 400 | 3m 15s | 38°C / 100°F |
| Tetenal Colortec C-41 | stock | 400 | 3m 15s | 38°C / 100°F |
| Tetenal Colortec C-41 | stock | 800 | 3m 45s | 38°C / 100°F |
| Tetenal Colortec C-41 | stock | 1600 | 4m 15s | 38°C / 100°F |
| Tetenal Colortec C-41 | stock | 400 | 8m | 30°C / 86°F |
| Tetenal Colortec C-41 | stock | 400 | 2m | 45°C / 113°F |
| Adox C-TEC 41 | stock | 400 | 3m 15s | 38°C / 100°F |
| Adox C-TEC 41 | stock | 800 | 3m 45s | 38°C / 100°F |
Showing 10 of 39 entries. Temperatures, mixing and push times for every developer →
Often used for
Help improve this page. Some information for this film is limited. If you have experience shooting Portra 400 or know of published data we're missing, we'd love to hear from you.
Get in touchDescriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.