Film · Black and white negative
Rollei/Maco RPX 25
Rollei's low-speed panchromatic film with extraordinarily fine grain (RMS 8), very high resolving power (260 lp/mm) and high silver content on a clear 100 micron polyester base. Wikipedia considers it Agfa Aviphot 80 PE1.
Rollei data sheet: +/-1 stop latitude, RMS 8, 260 lp/mm, 100 micron polyester, 35mm/120/4x5. Wikipedia lists EI 12-50 and considers it Agfa-Gevaert Aviphot 80 converted by Harman.
- Box speed
- ISO 25
- Process
- BW
- Formats
- 35mm, 120, 4x5
- Grain
- Very fine
- Latitude
- Moderate
- Reciprocity
- See table
Characteristics
Reciprocity failure
| Metered | Compensated |
|---|---|
| 2s | 3s |
| 10s | 20s |
| 20s | 50s |
| 50s | 180s |
Rollei's datasheet Schwarzschild table: no change from 1/1000 s to 1 s; effective exposure 2 s 3 s; 10 s 20 s; 20 s 50 s; 50 s 180 s.
Development times
| Developer | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| D-76 | stock | 25 | 6m | 20°C / 68°F |
| Rodinal | 1+25 | 25 | 6m | 20°C / 68°F |
| Rodinal | 1+50 | 25 | 11m | 20°C / 68°F |
| Rodinal | 1+100 | 25 | 60m | 20°C / 68°F |
| D-76 | 1+1 | 25 | 8m | 20°C / 68°F |
| Rollei Supergrain | 1+9 | 25 | 4m 30s | 20°C / 68°F |
| Rollei Supergrain | 1+12 | 25 | 5m 30s | 20°C / 68°F |
| Rollei Supergrain | 1+15 | 25 | 6m 30s | 20°C / 68°F |
| ID-11 | 1+1 | 25 | 8m | 20°C / 68°F |
| Perceptol | 1+1 | 25 | 10m | 20°C / 68°F |
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Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.