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Development time

Lomography Lomography Color Negative 400 in CineStill Cs41 Color Simplified Kit

3:30 at 39°C (102°F), stock dilution, box speed.

Start timer · 3:30
Time
3:30
Standard
Dilution
Stock
Temperature
39°C
102°F
Box speed
ISO 400
C-41

Development time

DilutionEITimeTempAgitationEvidenceTimer
Stock4003:3039°C / 102°FStandardManufacturerChecked 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 39°C (102°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

Lomography Lomography Color Negative 400
Lomography's general-purpose ISO 400 C-41 colour negative in 35mm and 120; the Wikipedia list gives no further characteristics.
Notes on this pairing
  • Kit time; applies to any C-41 film. Developer at 102 °F (39 °C): continuous for 10 s, then 4 inversions every 30 s. Add 1 °C if not using a water bath.

Lomography Color Negative 400 in other developers

Other films in CineStill Cs41 Color Simplified Kit