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Development time

Kodak Portra 800 in Compard Digibase C-41

3:15 at 37.8°C (100°F), stock dilution, box speed.

Start timer · 3:15
Time
3:15
Standard
Dilution
Stock
Temperature
37.8°C
100°F
Box speed
ISO 800
C-41

Development time

DilutionEITimeTempAgitationEvidenceTimer
Stock8003:1537.8°C / 100°FStandardCommunity consensusChecked Oct 2026Start timer

EI is the speed the film was rated at when shooting. Evidence says where each time comes from: the manufacturer’s own data, a named test, a compilation or several agreeing reports (community consensus), or one person’s report. Times marked “not yet verified” come from secondary sources and haven’t been checked against a manufacturer datasheet. Where sources give different times, every one is listed and marked “sources differ”.

Other temperatures

Colour developers run at 37.8°C (100°F) 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

Dilution300 ml (10.1 fl oz) (one 35mm roll)500 ml (16.9 fl oz) (one 120 roll)
StockUse as mixed, undilutedUse as mixed, undiluted

How they work together

Kodak Portra 800
Kodak (E-4040, Jan 2025) describes well balanced colour saturation, very fine grain and best-in-class underexposure latitude, for long lenses and low light. 135 and 120 only.
Notes on this pairing
  • Kit time; applies to any C-41 film. Colour developer at 37.8 ±0.3 °C; agitate for the first 15 s, then once every 30 s. Compard says its times come from user experience (ohne Gewähr).

Portra 800 in other developers

Other films in Compard Digibase C-41