| DIN (°) | ASA (ISO) | GOST (old) | GOST (new) | Scheiner (°Sch) |
|---|---|---|---|---|
| 10° | 8 | 8 | 8 | 12°Sch |
| 11° | 10 | 10 | 10 | 13°Sch |
| 12° | 12 | 12 | 12 | 14°Sch |
| 13° | 16 | 16 | 16 | 15°Sch |
| 14° | 20 | 20 | 20 | 16°Sch |
| 15° | 25 | 25 | 25 | 17°Sch |
| 16° | 32 | 32 | 32 | 18°Sch |
| 17° | 40 | 40 | 40 | 19°Sch |
| 18° | 50 | 50 | 50 | 20°Sch |
| 19° | 64 | 64 | 64 | 21°Sch |
| 20° | 80 | 80 | 80 | 22°Sch |
| 21° | 100 | 90 | 100 | 23°Sch |
| 22° | 125 | 120 | 125 | 24°Sch |
| 23° | 160 | 150 | 160 | 25°Sch |
| 24° | 200 | 180 | 200 | 26°Sch |
| 25° | 250 | 240 | 250 | 27°Sch |
| 26° | 320 | 300 | 320 | 28°Sch |
| 27° | 400 | 350 | 400 | 29°Sch |
| 28° | 500 | 500 | 500 | 30°Sch |
| 29° | 640 | 600 | 640 | 31°Sch |
| 30° | 800 | 700 | 800 | 32°Sch |
| 31° | 1000 | 900 | 1000 | 33°Sch |
| 32° | 1250 | 1100 | 1250 | 34°Sch |
| 33° | 1600 | 1400 | 1600 | 35°Sch |
- Intermediate values follow the DIN logarithmic progression (≈ +1° ≈ ×1.26 speed).
- ASA/ISO rounded to standard nominal film speeds.
- GOST (old) approximated where official values weren’t standardized for every step.
- Scheiner = DIN + 2 applied consistently.
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