US 2017/0307860 A1 — Marco Pretorius, Vladan Blahnik
| 8 ELEMENTS / 7 GROUPS |
| f ≈ 134.3 mm |
| F/1.8 |
| 2ω ≈ 13.1° (31.14 mm ID) |
| ALL SPHERICAL |
Infinity only. Production focus is floating/internal (ARRI/ZEISS); no close-focus spacings are published.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | N-FK5 (Schott) |
| L2 | Positive Meniscus | S-FPL51 (OHARA) |
| L3 | Plano-Convex | N-SF6 (Schott) |
| L4 | Biconcave Negative | SF2 (Schott) |
| L5 | Biconvex Positive | N-PSK53 (Schott) |
| L6 | Biconcave Negative | SF1 (Schott) |
| L7 | Negative Meniscus | N-FK5 (Schott) |
| L8 | Positive Meniscus | N-SF6 (Schott) |