Film · Black and white negative
CatLABS CatLABS X Film 320 Pro (120)
CatLABS X Film 320 Pro for 120 (the maker's listing also sold 35mm, now sold out). Medium-speed, rated EI 200 outdoors in bright sun and pushable to 1600, with extended sensitivity to about 750 nm for infrared work (R72 filter, ISO 3-5). The maker does not state the emulsion origin; the Wikipedia list gives USA/EU. Non-DX.
- Box speed
- ISO 320
- Process
- BW
- Formats
- 120
- Grain
- Not published
- Latitude
- Good
- Reciprocity
- Not published
Characteristics
Reciprocity failure
No official data available. The manufacturer hasn't published reciprocity specifications for this film.
For long exposures, try starting with a 1.3 exponent (t' = t1.3) as a baseline and bracket your shots. This is a reasonable middle ground that works for many films.
CatLABS' X Film 320 Pro page publishes no reciprocity figures; none are given here. Bracket long exposures.
Development times
| Developer | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| 510-Pyro | 1+100 | 320 | 13m 30s | 20°C / 68°F |
| D-76 | stock | 320 | 6m | 20°C / 68°F |
| D-76 | 1+1 | 320 | 10m | 20°C / 68°F |
| ID-11 | 1+1 | 320 | 10m | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 320 | 13m | 20°C / 68°F |
| Rodinal | 1+50 | 320 | 19m | 20°C / 68°F |
| Rodinal | 1+25 | 320 | 9m | 20°C / 68°F |
| XTOL | stock | 320 | 11m | 20°C / 68°F |
| T-Max Developer | 1+4 | 320 | 9m 30s | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 200 | 8m | 20°C / 68°F |
Showing 10 of 14 entries. Temperatures, mixing and push times for every developer →
Often used for
Help improve this page. Some information for this film is limited. If you have experience shooting CatLABS X Film 320 Pro (120) or know of published data we're missing, we'd love to hear from you.
Get in touchDescriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.