JP 2016-139125 A EXAMPLE 1 — PANASONIC / IMAOKA
| 23 ELEMENTS / 7 GROUPS (17 SUB-GROUPS) |
| f = 92.3–272.9 mm |
| F/2.91–4.11 |
| 2ω = 26.4–8.8° |
| ALL SPHERICAL — NO ASPHERICAL SURFACES |
| 7 APD ELEMENTS (3× S-FPL55, S-FPL51, 2× J-PSKH4/593670, S-FSL5) |
| OIS (G4C, 3 elements) |
| DUAL INNER FOCUS (G5 neg + G6 pos) |
Dual inner focus (Leica 'Dual Syncro Drive'): G5 (neg cemented doublet L19–L20) moves image-side; G6 (pos singlet L21) moves object-side. Opposing motion cancels field curvature during focus.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-LAH95 (OHARA) |
| L2 | Biconvex Positive | S-FPL55 (OHARA) |
| L3 | Biconvex Positive | S-FPL55 (OHARA) |
| L4 | Biconvex Positive | S-TIH53 (OHARA) |
| L5 | Negative Meniscus | J-PSKH4 (Hikari) |
| L6 | Positive Meniscus | S-TIM35 (OHARA) |
| L7 | Negative Meniscus | J-PSKH4 (Hikari) |
| L8 | Biconcave Negative | S-LAL18 (OHARA) |
| L9 | Positive Meniscus | S-TIH23 (OHARA) |
| L10 | Biconvex Positive | S-LAH55V (OHARA) |
| L11 | Positive Meniscus | S-FPL55 (OHARA) |
| L12 | Biconvex Positive | S-FPL51 (OHARA) |
| L13 | Biconcave Negative | S-LAH99 (OHARA) |
| L14 | Negative Meniscus | NBFD15 (HOYA) |
| L15 | Biconvex Positive | S-FSL5 (OHARA) |
| L16 | Biconvex Positive | S-LAL8 (OHARA) |
| L17 | Biconcave Negative | S-NSL36 (OHARA) |
| L18 | Biconvex Positive | S-BSM28 (OHARA) |
| L19 | Positive Meniscus | S-TIH6 (OHARA) |
| L20 | Biconcave Negative | E-FL5 (HOYA) |
| L21 | Biconvex Positive | S-TIH53 (OHARA) |
| L22 | Biconcave Negative | S-BAH28 (OHARA) |
| L23 | Plano-Convex Positive | S-BSM28 (OHARA) |
Detailed analysis available in the interactive viewer above.