NIKON NIKKOR Z 24-50mm f/4-6.3 — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON NIKKOR Z 24-50mm f/4-6.3NIKON NIKKOR Z 24-50mm f/4-6.3JP 2021-189377 A↗ — Takakazu Hirose, Keiko Yamada, Yasushi Yamamoto, Hiroshi Yamamoto
11 ELEMENTS / 10 GROUPS
f = 24.7–48.5 mm
F/4.08–6.34
2ω = 82.5°–48.2°
6 ASPHERICAL SURFACES
Focus MechanismInternal focus via G3 (2 elements, stepping motor). G3 translates toward image for close focus.
Optical Elements (11 physical; 12 modeled media)ElementTypeGlass
L1aNegative MeniscusUnmatched barium crown (patent nd=1.69680, νd=55.46; prior S-BSM10 label incompatible)
L1bBiconcave Neg. (2× Asph)COP resin (ZEONEX-type)
L1cPositive MeniscusPBH21 (OHARA; historical 923209)
L2aPositive MeniscusFCD1 (HOYA) / S-FPL51
L2bBiconvex PositiveFCD1 (HOYA) / S-FPL51
CemCement LayerUV-cure adhesive
L2cBiconcave NegativeBAFD7 (HOYA) / S-BAH27 / NBFD12 class
L2dBiconvex Positive (2× Asph)M-BACD12 (HOYA)
L2eNegative MeniscusS-TIM22 (OHARA)
L3aNegative MeniscusS-LAH55V (OHARA)
L3bNeg. Meniscus (2× Asph)COP resin (ZEONEX-type)
L4aPositive MeniscusS-TIM22 (OHARA)

Element	Type	Glass
L1a	Negative Meniscus	Unmatched barium crown (patent nd=1.69680, νd=55.46; prior S-BSM10 label incompatible)
L1b	Biconcave Neg. (2× Asph)	COP resin (ZEONEX-type)
L1c	Positive Meniscus	PBH21 (OHARA; historical 923209)
L2a	Positive Meniscus	FCD1 (HOYA) / S-FPL51
L2b	Biconvex Positive	FCD1 (HOYA) / S-FPL51
Cem	Cement Layer	UV-cure adhesive
L2c	Biconcave Negative	BAFD7 (HOYA) / S-BAH27 / NBFD12 class
L2d	Biconvex Positive (2× Asph)	M-BACD12 (HOYA)
L2e	Negative Meniscus	S-TIM22 (OHARA)
L3a	Negative Meniscus	S-LAH55V (OHARA)
L3b	Neg. Meniscus (2× Asph)	COP resin (ZEONEX-type)
L4a	Positive Meniscus	S-TIM22 (OHARA)