FUJIFILM FUJINON XF 16-55mm f/2.8 R LM WR II — Optical Cross-Section & Ray Tracing

Home / Lenses / Fujifilm / FUJIFILM FUJINON XF 16-55mm f/2.8 R LM WR IIFUJIFILM FUJINON XF 16-55mm f/2.8 R LM WR IIUS 2025/0234079 A1 Example 1 — Fujifilm
16 elements / 11 groups
f = 16.50–53.40 mm patent design
F2.8 marketed / F2.88 design
4 aspherical elements
3 ED + 1 Super ED inferred from glass set
Focus MechanismInternal focusing by G4, the cemented L41/L42 doublet; close-focus spacings are paraxially fitted because the patent publishes only infinity-focus zoom spacings.
Optical Elements (16)ElementTypeGlass
L11Negative MeniscusFDS90 / S-TIH53W class (dense short flint, 847/238 code)
L12Positive MeniscusFCD1B / S-FPL51 class (ED fluorophosphate, 497/816 code)
L13Positive MeniscusTAC8 / S-LAL18 class (lanthanum crown, 729/547 code)
L21Neg. Meniscus (2× Asph)MC-NBFD130 / L-LAH53 class (moldable lanthanum dense flint, 808/409 code)
L22Biconcave NegativeE-CF6 / S-NSL36 class (light flint, 517/522 code)
L23Biconvex PositiveS-LAH71 / N-LASF9 class (lanthanum dense flint, 850/323 code)
L24Negative MeniscusFCD1 / S-FPL51 class (ED fluorophosphate, 497/816 code)
L31Biconvex Positive (2× Asph)M-FD80 / L-TIM28 class (moldable flint, 689/312 code)
L32Negative MeniscusNBFD25 / S-NBH56 class (high-θgF dense flint, 855/252 code)
L33Positive MeniscusFCD100 / S-FPL53 class (Super ED fluorophosphate, 437/951 code)
L34Plano-Concave NegativeNBFD25 / S-NBH56 class (high-θgF dense flint, 855/252 code)
L35Biconvex PositiveFCD1 / S-FPL51 class (ED fluorophosphate, 497/816 code)
L36Biconvex Positive (2× Asph)PCD4 / S-PHM52 class (anomalous phosphate crown, 618/634 code)
L41Biconvex PositiveFDS16-W class (extreme-index short flint, 986/165 code)
L42Biconcave NegativeNBFD10 / S-LAH60V class (lanthanum dense flint, 834/372 code)
L51Positive Meniscus (2× Asph)BSC7 / BK7-class moldable crown (517/642 family)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L11	Negative Meniscus	FDS90 / S-TIH53W class (dense short flint, 847/238 code)
L12	Positive Meniscus	FCD1B / S-FPL51 class (ED fluorophosphate, 497/816 code)
L13	Positive Meniscus	TAC8 / S-LAL18 class (lanthanum crown, 729/547 code)
L21	Neg. Meniscus (2× Asph)	MC-NBFD130 / L-LAH53 class (moldable lanthanum dense flint, 808/409 code)
L22	Biconcave Negative	E-CF6 / S-NSL36 class (light flint, 517/522 code)
L23	Biconvex Positive	S-LAH71 / N-LASF9 class (lanthanum dense flint, 850/323 code)
L24	Negative Meniscus	FCD1 / S-FPL51 class (ED fluorophosphate, 497/816 code)
L31	Biconvex Positive (2× Asph)	M-FD80 / L-TIM28 class (moldable flint, 689/312 code)
L32	Negative Meniscus	NBFD25 / S-NBH56 class (high-θgF dense flint, 855/252 code)
L33	Positive Meniscus	FCD100 / S-FPL53 class (Super ED fluorophosphate, 437/951 code)
L34	Plano-Concave Negative	NBFD25 / S-NBH56 class (high-θgF dense flint, 855/252 code)
L35	Biconvex Positive	FCD1 / S-FPL51 class (ED fluorophosphate, 497/816 code)
L36	Biconvex Positive (2× Asph)	PCD4 / S-PHM52 class (anomalous phosphate crown, 618/634 code)
L41	Biconvex Positive	FDS16-W class (extreme-index short flint, 986/165 code)
L42	Biconcave Negative	NBFD10 / S-LAH60V class (lanthanum dense flint, 834/372 code)
L51	Positive Meniscus (2× Asph)	BSC7 / BK7-class moldable crown (517/642 family)