VOIGTLÄNDER APO-ULTRON 90mm f/2 VM — Optical Cross-Section & Ray Tracing

Home / Lenses / Voigtländer / VOIGTLÄNDER APO-ULTRON 90mm f/2 VMVOIGTLÄNDER APO-ULTRON 90mm f/2 VMJP 2026-8235 A↗ — Yuki Shibata
8 ELEMENTS / 7 GROUPS
90mm f/2 (MARKETED)
f = 87.28mm / F2.05 (DESIGN)
27.4° ANGLE OF VIEW
6 / 8 APD GLASS ELEMENTS
ALL SPHERICAL / UNIT FOCUS
Focus MechanismPUBLISHED unit focus: the complete optical system extends toward the object. The camera-fixed model varies only the surface-16 rear gap from 27.39997mm at infinity to 38.36529mm at the patent's 800mm object distance (|β| = 0.126); no internal movement is reconstructed.
Optical Elements (8 physical)ElementTypeGlass
L11Positive Meniscus, convex to objectBACD14 / J-SK14 / K-SK14 class (603607; vendor unresolved)
L12Positive Meniscus, convex to objectFCD1 / N-PK52A / H-FK61 class (497816; vendor unresolved)
L13Positive Meniscus, convex to objectFCD1 / N-PK52A / H-FK61 class (497816; vendor unresolved)
L14Negative Meniscus, convex to objectM-FD80 / J-SF8 / H-ZF10 class (689312; vendor unresolved)
L15Biconvex PositiveN-SF66 / E-FDS1 / H-ZF62 class (923209; vendor unresolved)
L16Biconcave NegativeNBFD29 (HOYA)
L21Biconvex PositiveJ-K3 (HIKARI)
L31Negative Meniscus, convex to imageFCD100 / H-FK95 class (437951; vendor unresolved)

Element	Type	Glass
L11	Positive Meniscus, convex to object	BACD14 / J-SK14 / K-SK14 class (603607; vendor unresolved)
L12	Positive Meniscus, convex to object	FCD1 / N-PK52A / H-FK61 class (497816; vendor unresolved)
L13	Positive Meniscus, convex to object	FCD1 / N-PK52A / H-FK61 class (497816; vendor unresolved)
L14	Negative Meniscus, convex to object	M-FD80 / J-SF8 / H-ZF10 class (689312; vendor unresolved)
L15	Biconvex Positive	N-SF66 / E-FDS1 / H-ZF62 class (923209; vendor unresolved)
L16	Biconcave Negative	NBFD29 (HOYA)
L21	Biconvex Positive	J-K3 (HIKARI)
L31	Negative Meniscus, convex to image	FCD100 / H-FK95 class (437951; vendor unresolved)