PANASONIC LUMIX S PRO 24-70mm f/2.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Panasonic / PANASONIC LUMIX S PRO 24-70mm f/2.8PANASONIC LUMIX S PRO 24-70mm f/2.8US 2021/0055531 A1↗ — Genki Nakazawa, Takao Yamanaka, Yoshiaki Kurioka
18 ELEMENTS / 16 GROUPS
DESIGN 24.840-67.551 mm
F/2.927 MODELED
3 ASPHERICAL ELEMENTS / 6 ASPHERICAL SURFACES
PUBLISHED DUAL-GROUP FOCUS
Focus MechanismPUBLISHED dual-group focus. From infinity to the patent shortest-range state, negative G5 moves imageward and negative G6 moves objectward while G7 remains fixed. The published object-to-image-plane distance is approximately 0.371-0.375 m across the three zoom states; Panasonic markets 0.37 m minimum focus.
Optical Elements (18 physical)ElementTypeGlass
L1Negative Meniscus, convex to objectN-SF66 (SCHOTT)
L2Positive Meniscus, convex to objectN-LASF44 (SCHOTT)
L3Positive Meniscus, convex to object773496 — lanthanum crown class (vendor unresolved)
L4Negative Meniscus, convex to object713539 — lanthanum crown class (vendor unresolved)
L5Biconcave Negative (2× Asph)K-VC89 (Sumita catalog-equivalent; supplier not identified)
L6Biconvex Positive847238 — dense flint class (vendor unresolved)
L7Negative Meniscus, concave to object487704 — fluor crown class (vendor unresolved)
L8Positive Meniscus, convex to objectN-SF66 (SCHOTT)
L9Biconvex Positive497816 — ED fluorophosphate crown class (vendor unresolved)
L10Biconcave NegativeFDS24 (Hoya catalog-equivalent; supplier not identified)
L11Biconvex Positive497816 — ED fluorophosphate crown class (vendor unresolved)
L12Biconcave Negative847238 — dense flint class (vendor unresolved)
L13Biconvex PositiveFCD705 (HOYA)
L14Positive Meniscus, convex to object (2× Asph)K-VC89 (Sumita catalog-equivalent; supplier not identified)
L15Negative Meniscus, convex to object835427 — lanthanum dense-flint class (vendor unresolved)
L16Negative Meniscus, convex to object (2× Asph)L-TIM28 (OHARA)
L17Biconvex Positive847238 — dense flint class (vendor unresolved)
L18Biconcave Negative954323 — high-index lanthanum class (vendor unresolved)

Element	Type	Glass
L1	Negative Meniscus, convex to object	N-SF66 (SCHOTT)
L2	Positive Meniscus, convex to object	N-LASF44 (SCHOTT)
L3	Positive Meniscus, convex to object	773496 — lanthanum crown class (vendor unresolved)
L4	Negative Meniscus, convex to object	713539 — lanthanum crown class (vendor unresolved)
L5	Biconcave Negative (2× Asph)	K-VC89 (Sumita catalog-equivalent; supplier not identified)
L6	Biconvex Positive	847238 — dense flint class (vendor unresolved)
L7	Negative Meniscus, concave to object	487704 — fluor crown class (vendor unresolved)
L8	Positive Meniscus, convex to object	N-SF66 (SCHOTT)
L9	Biconvex Positive	497816 — ED fluorophosphate crown class (vendor unresolved)
L10	Biconcave Negative	FDS24 (Hoya catalog-equivalent; supplier not identified)
L11	Biconvex Positive	497816 — ED fluorophosphate crown class (vendor unresolved)
L12	Biconcave Negative	847238 — dense flint class (vendor unresolved)
L13	Biconvex Positive	FCD705 (HOYA)
L14	Positive Meniscus, convex to object (2× Asph)	K-VC89 (Sumita catalog-equivalent; supplier not identified)
L15	Negative Meniscus, convex to object	835427 — lanthanum dense-flint class (vendor unresolved)
L16	Negative Meniscus, convex to object (2× Asph)	L-TIM28 (OHARA)
L17	Biconvex Positive	847238 — dense flint class (vendor unresolved)
L18	Biconcave Negative	954323 — high-index lanthanum class (vendor unresolved)