SONY SONNAR T* FE 35mm f/2.8 ZA — Optical Cross-Section & Ray Tracing

Home / Lenses / Sony / SONY SONNAR T* FE 35mm f/2.8 ZASONY SONNAR T* FE 35mm f/2.8 ZAJP 2015-041012 A↗ — Takahiko Sakai
7 ELEMENTS / 5 GROUPS
f ≈ 36.1 mm
F/2.8
2ω ≈ 62.6°
6 ASPHERICAL SURFACES
Focus MechanismInner focus — single negative element (L121/G2) moves object→image. Linear AF motor.
Optical Elements (7 physical)ElementTypeGlass
L111Negative Meniscus800255 - dense flint (patent nd=1.80000, vd=25.46; no exact public catalog match)
L112Positive MeniscusUnmatched (830427 patent-rounded lanthanum glass; vendor unresolved)
L113Biconvex Positive (2× Asph)Lanthanum flint (LAF class), 760/492 — unresolved; likely PGM-compatible proprietary melt
L121Negative Meniscus (2× Asph)Unmatched (580595 patent-rounded molded crown; vendor unresolved)
L131Biconvex PositiveUnmatched (830427 patent-rounded lanthanum glass; vendor unresolved)
L132Biconcave Negative630346 - dense flint (patent nd=1.63000, vd=34.57; no exact public catalog match)
L133Negative Meniscus (2× Asph)680312 - dense flint (patent nd=1.68000, vd=31.16; no exact public catalog match)

Element	Type	Glass
L111	Negative Meniscus	800255 - dense flint (patent nd=1.80000, vd=25.46; no exact public catalog match)
L112	Positive Meniscus	Unmatched (830427 patent-rounded lanthanum glass; vendor unresolved)
L113	Biconvex Positive (2× Asph)	Lanthanum flint (LAF class), 760/492 — unresolved; likely PGM-compatible proprietary melt
L121	Negative Meniscus (2× Asph)	Unmatched (580595 patent-rounded molded crown; vendor unresolved)
L131	Biconvex Positive	Unmatched (830427 patent-rounded lanthanum glass; vendor unresolved)
L132	Biconcave Negative	630346 - dense flint (patent nd=1.63000, vd=34.57; no exact public catalog match)
L133	Negative Meniscus (2× Asph)	680312 - dense flint (patent nd=1.68000, vd=31.16; no exact public catalog match)