VOIGTLÄNDER NOKTON Vintage Line 50mm f/1.5 Aspherical II VM — Optical Cross-Section & Ray Tracing

Home / Lenses / Voigtländer / VOIGTLÄNDER NOKTON Vintage Line 50mm f/1.5 Aspherical II VMVOIGTLÄNDER NOKTON Vintage Line 50mm f/1.5 Aspherical II VMJP 2022-012964 A↗ — Yasuyuki Sugano
8 ELEMENTS / 7 GROUPS
EFL 49.598 mm MODEL / 49.60 mm PATENT
50 mm / f/1.5 MARKETED
F/1.43 / 2ω = 46.58° PATENT
46.3° MARKETED AOV
2 ASPHERICAL SURFACES
PUBLISHED UNIT FOCUS
Focus MechanismPublished F10/F14 unit focus: internal gaps ZD9=5.30 mm and ZD12=0.15 mm remain fixed; air-equivalent rear spacing ZD16 changes from 25.00 to 29.12 mm. The close source row uses 630 mm from object to the first optical surface, equivalent to about 0.699 m object-to-image distance.
Optical Elements (8 physical)ElementTypeGlass
L1Positive Meniscus883408 — dense lanthanum glass class (vendor unresolved)
L2Positive Meniscus729547 — lanthanum crown class (vendor unresolved)
L3Positive MeniscusUnmatched (nd=1.84202, vd=43.34; code 842433)
L4Negative Meniscus847238 — N-SF57/S-TIH53 class (vendor unresolved)
L5Biconcave NegativeUnmatched (nd=1.60286, vd=37.37; code 603374; near F5 class)
L6Biconvex Positive883408 — dense lanthanum glass class (vendor unresolved)
L7Biconvex PositiveUnmatched (nd=1.79316, vd=47.24; near 788474/475 lanthanum-flint class)
LENeg. Meniscus (2× Asph)L-TIM28P (OHARA)

Element	Type	Glass
L1	Positive Meniscus	883408 — dense lanthanum glass class (vendor unresolved)
L2	Positive Meniscus	729547 — lanthanum crown class (vendor unresolved)
L3	Positive Meniscus	Unmatched (nd=1.84202, vd=43.34; code 842433)
L4	Negative Meniscus	847238 — N-SF57/S-TIH53 class (vendor unresolved)
L5	Biconcave Negative	Unmatched (nd=1.60286, vd=37.37; code 603374; near F5 class)
L6	Biconvex Positive	883408 — dense lanthanum glass class (vendor unresolved)
L7	Biconvex Positive	Unmatched (nd=1.79316, vd=47.24; near 788474/475 lanthanum-flint class)
LE	Neg. Meniscus (2× Asph)	L-TIM28P (OHARA)