Development time
CatLABS CatLABS X Film 320 (120/Sheet) in D-76
6:00 at 20°C, stock dilution, box speed.
Start timer · 6:00Time
6:00
Standard
Dilution
Stock
Temperature
20°C
Box speed
ISO 320
B&W
All 2 times
| Dilution | EI | Time | Temp | Agitation | Timer |
|---|---|---|---|---|---|
| Stock | 320 | 6:00 | 20°C / 68°F | Standard | Start timer |
| 1+1 | 320 | 10:00 | 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 |
|---|---|---|---|---|---|---|
| 7:30 | 6:43 | 6:00 | 5:24 | 4:48 | 4:19 | 3:54 |
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) |
|---|---|---|
| Stock | Use as mixed, undiluted | Use as mixed, undiluted |
| 1+1 | 150 ml developer + 150 ml water | 250 ml developer + 250 ml water |
How they work together
- D-76
- Fine grain, moderate acutance, full film speed, normal contrast. Long density scale with excellent shadow detail.
- 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.
CatLABS X Film 320 (120/Sheet) in other developers
510-Pyro
13:30
1+100 · EI 320 · 20°C
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 D-76
Kodak Tri-X 400
6:45
Stock · EI 400 · 20°C · 7 variants
Kodak T-Max 400
7:30
Stock · EI 400 · 20°C · 6 variants
Ilford Delta 400
9:30
Stock · EI 400 · 20°C · 2 variants
Foma Bohemia Fomapan 400 Action
7:30
Stock · EI 400 · 20°C
Harman Technology Kentmere Pan 100
9:00
Stock · EI 100 · 20°C · 2 variants
Kodak T-Max 100
6:30
Stock · EI 100 · 20°C · 2 variants
Kodak T-Max P3200
14:00
Stock · EI 3200 · 20°C · 2 variants
Kodak Double-X 5222
7:00
Stock · EI 250 · 20°C · 4 variants
Fujifilm Neopan Acros II
6:30
Stock · EI 100 · 20°C · 2 variants
Rollei RPX 400
9:00
Stock · EI 400 · 20°C · 2 variants
Rollei RPX 25
6:00
Stock · EI 25 · 20°C · 2 variants
Foma Bohemia Fomapan 100 Classic
7:00
Stock · EI 100 · 20°C · 2 variants
Foma Bohemia Fomapan 200 Creative
8:30
Stock · EI 200 · 20°C · 2 variants
Ilford Ortho Plus
8:00
Stock · EI 80 · 20°C · 2 variants
Ilford SFX 200
10:00
Stock · EI 200 · 20°C · 4 variants
Harman Technology Kentmere Pan 200
7:30
Stock · EI 200 · 20°C · 2 variants
Rollei/Maco Retro 80S
9:00
Stock · EI 80 · 20°C
FILM Ferrania P30
7:00
Stock · EI 80 · 20°C
Adox CHS 100 II
6:30
Stock · EI 100 · 20°C · 2 variants
Shanghai General Film Shanghai GP3 400
10:00
Stock · EI 400 · 20°C
CatLABS CatLABS X Film 320 (35mm)
6:00
Stock · EI 320 · 20°C · 2 variants
Street Candy Street Candy MTN 100
5:30
Stock · EI 100 · 20°C · 5 variants
Bergger Pancro 400
9:00
Stock · EI 400 · 20°C · 2 variants