| KODAK Precise EvoClear 1.56 (1.557 High Index) 74mm & 78mm Diameter Lens Blank Distance decentration: 3mm Adds in 0.25 diopter steps from 1.00 to 3.00 |
| Nominal Curve | Diameter | True Curve | Radius mm | SAG at 50mm | Nominal Concave | Edge Thickness | Center Thickness |
| 0.50 | 74 | 0.60 | 3.00 | 15.4 | 13.4 | ||
| 1.50 | 74 | 1.48 | 3.00 | 15.5 | 14.6 | ||
| 3.25 | 78 | 3.24 | 6.00 | 15.6 | 11.9 | ||
| 5.00 | 78 | 5.22 | 6.00 | 13.3 | 13.1 | ||
| 7.00 | 78 | 7.06 | 6.00 | 11.5 | 14.4 | ||
| 8.50 | 74 | 8.58 | 6.00 | 10.1 | 15.5 |