Photometric data
| Sbisa bar filter number | Log of luminance | NDF bar filter number | Log of luminance |
|---|---|---|---|
| 1 | 5.66 | 0.3 | 6.00 |
| 2 | 5.58 | 0.6 | 5.69 |
| 3 | 5.59 | 0.9 | 5.40 |
| 4 | 5.39 | 1.2 | 5.10 |
| 5 | 5.29 | 1.5 | 4.85 |
| 6 | 5.24 | 1.8 | 4.55 |
| 7 | 5.17 | 2.1 | 4.27 |
| 8 | 5.17 | 2.4 | 3.97 |
| 9 | 5.08 | 2.7 | 3.67 |
| 10 | 5.00 | 3.0 | 3.35 |
| 11 | 5.00 | ||
| 12 | 4.97 | ||
| 13 | 4.64 | ||
| 14 | 4.47 | ||
| 15 | 3.83 | ||
| 16 | 2.24 | ||
| 17 | 2.17 |