| Stops Difference Between Lightest & Darkest Areas of a Scene |
Scene Luminance Ratio |
| 5 | 32 : 1 |
| 5 1/3 | 40 : 1 |
| 5 2/3 | 50 : 1 |
| 6 | 64 : 1 |
| 6 1/3 | 80 : 1 |
| 6 2/3 | 100 : 1 |
| 7 | 125 : 1 |
| 7 1/3 | 160 : 1 |
| 7 2/3 | 200 : 1 |
| 8 | 250 : 1 |
| 8 1/3 | 320 : 1 |
| 8 2/3 | 400 : 1 |
| 9 | 500 : 1 |
| 9 1/3 | 640 : 1 |
| 9 2/3 | 800 : 1 |
| 10 | 1000 : 1 |