Development time
Rollei/Maco Infrared 400 in XTOL
17:00 at 20°C (68°F), 1+1 dilution, box speed.
Start timer · 17:00- Time
- 17:00
- Dilution
- 1+1
- Temperature
- 20°C
- Box speed
- ISO 400
Development time
| Dilution | EI | Time | Temp | Agitation | Evidence | Timer |
|---|---|---|---|---|---|---|
| 1+1 | 400 | 17:00 | 20°C / 68°F | Standard | ManufacturerChecked Oct 2026 | Start 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
| 18°C64°F | 19°C66°F | 20°C68°F | 21°C70°F | 22°C72°F | 23°C73°F | 24°C75°F |
|---|---|---|---|---|---|---|
| 21:15 | 19:02 | 17:00 | 15:18 | 13:36 | 12:14 | 11:03 |
Calculated from the 20°C (68°F) time using Ilford’s temperature compensation factors, not taken from a datasheet. Most B&W developers behave well between 18–24°C (64–75°F).
Mixing
| Dilution | 300 ml (10.1 fl oz) (one 35mm roll) | 500 ml (16.9 fl oz) (one 120 roll) |
|---|---|---|
| 1+1 | 150 ml developer + 150 ml water | 250 ml developer + 250 ml water |
How they work together
- XTOL
- Fine grain, high acutance, full film speed, normal contrast. Excellent shadow detail with wide latitude.
- Rollei/Maco Infrared 400
- Near-infrared sensitive B&W film (to about 750 nm) on clear polyester; with a 695-720 nm filter gives the classic white-foliage 'wood effect'. Rollei rates it ISO 200-400 without filter.
Infrared 400 in other developers
Other films in XTOL
Kodak Tri-X 400
7:00
Stock · EI 400 · 20°C · 18 variants
Kodak T-Max 400
6:30
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Ilford HP5 Plus
8:00
Stock · EI 400 · 20°C · 6 variants
Ilford Delta 400
7:30
Stock · EI 400 · 20°C · 11 variants
Ilford FP4 Plus
8:30
Stock · EI 125 · 20°C · 2 variants
Ilford Ilford Delta 100
7:30
Stock · EI 100 · 20°C · 3 variants
Kodak T-Max 100
7:30
Stock · EI 100 · 20°C · 22 variants
Kodak T-Max P3200
13:30
Stock · EI 3200 · 20°C · 16 variants