Film · Black and white negative
CatLABS CatLABS X Film 320 (35mm)
CatLABS 320 black-and-white film in 35mm. The original hand-rolled 2019 X Film 320 carries '5222' edge markings, which indicate Kodak Double-X stock (Wikipedia list); CatLABS' current 35mm listing is X Pan 320 Pro (DX coded, 36 exposures), described as having a very wide latitude and variable grain and contrast depending on development. Its 120 version is a separate listing.
- Box speed
- ISO 320
- Process
- BW
- Formats
- 35mm
- 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 Pan 320 Pro page publishes no reciprocity figures; none are given here. Bracket long exposures.
Development times
| Developer | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| Rodinal | 1+50 | 320 | 22m | 20°C / 68°F |
| Rodinal | 1+25 | 320 | 10m | 20°C / 68°F |
| D-76 | stock | 320 | 6m | 20°C / 68°F |
| D-76 | 1+1 | 320 | 11m | 20°C / 68°F |
| ID-11 | 1+1 | 320 | 11m 30s | 20°C / 68°F |
| Ilfotec DD-X | 1+4 | 320 | 10m | 20°C / 68°F |
| XTOL | stock | 320 | 11m | 20°C / 68°F |
| T-Max Developer | 1+4 | 320 | 9m 30s | 20°C / 68°F |
| HC-110 | 1+31 | 250 | 8m | 20°C / 68°F |
Often used for
Help improve this page. Some information for this film is limited. If you have experience shooting CatLABS X Film 320 (35mm) 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.