JP 2024-104911 A, Numerical Example 2 — Sigma / Ryo Shioda
| 13 elements / 10 groups |
| 10.30-17.50 mm design EFL |
| F2.8 marketed; F2.92 patent |
| APS-C image circle, Y = 14.20 mm |
| 7 aspherical surfaces / 4 aspherical elements |
Inner-focus L11/G4 moves toward the image plane for near focus. The patent publishes only infinity-focus zoom spacings; close-focus travel is therefore not modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Neg. Meniscus (1× Asph) | M-TAFD305 (Hoya) |
| L2 | Neg. Meniscus (2× Asph) | M-PCD51 (Hoya) |
| L3 | Biconcave Negative | FCD100 (Hoya) |
| L4 | Biconvex Positive | TAFD32 (Hoya) |
| L5 | Positive Meniscus | NBFD30 (Hoya) |
| L6 | Negative Meniscus | TAFD65 (Hoya) |
| L7 | Positive Meniscus | FF5 (Hoya) |
| L8 | Negative Meniscus | S-LAH88 (Ohara) |
| L9 | Biconvex Positive | FCD100 (Hoya) |
| L10 | Biconvex Positive (2× Asph) | M-FCD500 (Hoya) |
| L11 | Biconcave Negative | NBF1 (Hoya) / H-LaF53 (CDGM equivalent) |
| L12 | Biconvex Positive | FCD100 (Hoya) |
| L13 | Biconcave Negative (2× Asph) | M-NBFD130 (Hoya) |
Detailed analysis available in the interactive viewer above.