Development time
CatLABS CatLABS X Film 320 (120/Sheet) in 510-Pyro
13:30 at 20°C, 1+100 dilution, box speed.
Start timer · 13:30Time
13:30
Standard
Dilution
1+100
Temperature
20°C
Box speed
ISO 320
B&W
Development time
| Dilution | EI | Time | Temp | Agitation | Timer |
|---|---|---|---|---|---|
| 1+100 | 320 | 13:30 | 20°C / 68°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
| 18°C | 19°C | 20°C | 21°C | 22°C | 23°C | 24°C |
|---|---|---|---|---|---|---|
| 16:53 | 15:07 | 13:30 | 12:09 | 10:48 | 9:43 | 8:47 |
Calculated from the 20°C time using Ilford’s temperature compensation factors, not taken from a datasheet. Most B&W developers behave well between 18°C and 24°C.
Mixing
| Dilution | 300 ml (one 35mm roll) | 500 ml (one 120 roll) |
|---|---|---|
| 1+100 | 3 ml developer + 297 ml water | 5 ml developer + 495 ml water |
How they work together
- 510-Pyro
- Very-high acutance, full film speed, compensating contrast. Exceptional highlight control with subtle staining.
- CatLABS CatLABS X Film 320 (120/Sheet)
- Different emulsion from the 35mm version (which is Kodak Double-X). Origin unclear - likely aerographic stock with finer grain.
- Notes on this pairing
- Maker's most recommended developer: finest grain, maximum speed.
CatLABS X Film 320 (120/Sheet) in other developers
D-76
6:00
Stock · EI 320 · 20°C · 2 variants
HC-110
10:30
1+49 · EI 200 · 20°C
ID-11
10:00
1+1 · EI 320 · 20°C
Ilfosol 3
8:30
1+9 · EI 200 · 20°C
Ilfotec DD-X
13:00
1+4 · EI 320 · 20°C · 2 variants
Rodinal
19:00
1+50 · EI 320 · 20°C · 3 variants
T-Max Developer
9:30
1+4 · EI 320 · 20°C
XTOL
11:00
Stock · EI 320 · 20°C · 2 variants
Other films in 510-Pyro
Kodak Tri-X 400
16:25
1+100 · EI 400 · 20°C · 4 variants
Kodak T-Max 400
30:45
1+100 · EI 400 · 20°C · 2 variants
Ilford HP5 Plus
9:00
1+100 · EI 400 · 20°C · 2 variants
Ilford Delta 400
22:00
1+100 · EI 400 · 20°C · 2 variants
Ilford FP4 Plus
20:25
1+100 · EI 125 · 20°C · 2 variants
Harman Technology Kentmere Pan 400
20:30
1+100 · EI 400 · 20°C · 3 variants
Ilford Ilford Delta 100
14:30
1+100 · EI 100 · 20°C · 2 variants
Kodak T-Max 100
8:50
1+100 · EI 100 · 21°C · 2 variants
Foma Bohemia Fomapan 100 Classic
10:30
1+100 · EI 80 · 20°C · 2 variants