Film · Black and white negative
Kodak T-Max 100
Kodak describes it as a medium-speed (ISO 100/21) panchromatic film with extremely high sharpness, extremely fine grain and very high resolving power, good for detailed subjects and copying (F-4016, June 2018). Kodak calls it the world's finest-grain 100-speed black-and-white film.
Sheet film listed as 4x5 (Wikipedia list). Eastman Kodak sells it as Ektapan 100 in the US and Canada from March 2026 (Wikipedia list); Kodak's pages do not say so.
- Box speed
- ISO 100
- Process
- BW
- Formats
- 35mm, 120, 4x5
- Grain
- Very fine
- Latitude
- Good
- Reciprocity
- See table
Characteristics
Reciprocity failure
| Metered | Compensated |
|---|---|
| 1s | 1.26s |
| 10s | 15s |
| 100s | 200s |
Kodak F-4016: no change from 1/1000 s to 1/10 s; 1 s +1/3 stop (about 1.26 s, converted because Kodak gives no time at 1 s); 10 s +1/2 stop (Kodak gives 15 s); 100 s +1 stop (Kodak gives 200 s). Kodak lists no development adjustment. 1/10,000 s needs +1/3 stop.
Development times
| Developer | Dilution | ISO | Time | Temp |
|---|---|---|---|---|
| D-76 | stock | 100 | 6m 30s | 20°C / 68°F |
| D-76 | 1+1 | 100 | 9m 30s | 20°C / 68°F |
| XTOL | stock | 100 | 7m 30s | 20°C / 68°F |
| XTOL | 1+1 | 100 | 9m 30s | 20°C / 68°F |
| Diafine | stock | 160 | 6m | 20°C / 68°F |
| Diafine | stock | 200 | 6m | 20°C / 68°F |
| Diafine | stock | 80 | 8m 30s | 22°C / 72°F |
| 510-Pyro | 1+100 | 64 | 20m | 20°C / 68°F |
| 510-Pyro | 1+100 | 100 | 8m 50s | 21°C / 70°F |
| PMK Pyro | 1+2+100 | 100 | 12m | 21.1°C / 70°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.