US 5,796,530 Example 2 — second soft-focus configuration
| 1 group / 2 elements |
| f = 90.63 mm computed; 90 mm marketed |
| f/4.8 fixed aperture |
| MFD 0.40 m |
| all-spherical cemented doublet |
Unit extension; the whole reversed cemented doublet and stop translate together.
| Element | Type | Glass |
|---|---|---|
| L12 | Biconcave Negative | E-LAFH2 (HIKARI, historical/obsolete; 804/339) |
| L11 | Biconvex Positive | S-BSM10 (OHARA; 623/570) |
Detailed analysis available in the interactive viewer above.