VOIGTLÄNDER PORTRAIT HELIAR 75mm f/1.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Voigtländer / VOIGTLÄNDER PORTRAIT HELIAR 75mm f/1.8VOIGTLÄNDER PORTRAIT HELIAR 75mm f/1.8JP 2026-120386 A↗ — Tatsuya Moriyama
6 ELEMENTS / 3 GROUPS
75 mm marketing · 73.356 mm sharp-state EFL
F/1.8 marketing · F/1.858 design
2ω = 33.18° · 135 FULL FRAME
ALL SPHERICAL · UNIT FOCUS · S.A. CONTROL
Focus MechanismPUBLISHED unit focus — the complete optical assembly translates; BF changes from 47.08 mm at infinity to 57.00 mm at the 0.70008 m image-plane-referenced close state. The independent S.A. control requires refocusing.
Optical Elements (6 physical)ElementTypeGlass
L4fBiconvex Positive883408 — high-index lanthanum glass class (vendor unresolved)
L4rBiconcave Negative847238 — very-dense-flint class (vendor unresolved)
L5fPositive Meniscus, convex to image805255 — dense-flint class (vendor unresolved)
L5rBiconcave Negative648338 — dense-flint class (vendor unresolved)
L6fNegative Meniscus, convex to object785257 — dense-flint class (vendor unresolved)
L6rBiconvex Positive883408 — high-index lanthanum glass class (vendor unresolved)

Element	Type	Glass
L4f	Biconvex Positive	883408 — high-index lanthanum glass class (vendor unresolved)
L4r	Biconcave Negative	847238 — very-dense-flint class (vendor unresolved)
L5f	Positive Meniscus, convex to image	805255 — dense-flint class (vendor unresolved)
L5r	Biconcave Negative	648338 — dense-flint class (vendor unresolved)
L6f	Negative Meniscus, convex to object	785257 — dense-flint class (vendor unresolved)
L6r	Biconvex Positive	883408 — high-index lanthanum glass class (vendor unresolved)