SONY FE 28-70mm f/2 GM — Optical Cross-Section & Ray Tracing

Home / Lenses / Sony / SONY FE 28-70mm f/2 GMSONY FE 28-70mm f/2 GMWO 2025/263124 A1↗, Example 1 — Takashi Yamasaki, Iwao Yamada
20 ELEMENTS / 14 GROUPS
f = 28.86–67.87 mm
F/2.06
2ω = 73.71–35.36°
10 ASPHERICAL SURFACES (5 elements)
Focus MechanismDual-group floating inner focus: G5 (L51, negative) moves toward image, G6 (L61, positive) moves toward object. Four XD linear motors (two per group).
Optical Elements (20 physical)ElementTypeGlass
L11Negative MeniscusFDS18 (HOYA; catalog ne 1.95825 as printed, vd 17.98 for the printed 18.0; supplier unconfirmed)
L12Biconvex PositiveFCD515 (HOYA; catalog ne 1.59489 as printed, vd 68.62 for the printed 68.6; supplier unconfirmed)
L13Positive MeniscusPCD51 (HOYA; catalog ne 1.59561 as printed, vd 67.00 for the printed 67.0; supplier unconfirmed)
L21Neg. Meniscus (2× Asph)Unmatched (printed coordinates; no vendor row at either the d or the e line; nearest e-line rows are 0.0004 or more away)
L22Biconcave NegativeNBFD29 (HOYA; catalog ne 1.77660 as printed, vd 29.74 for the printed 29.7; supplier unconfirmed)
L23Biconvex PositiveFDS24 (HOYA; catalog ne 1.93024 as printed, vd 23.96 for the printed 24.0; supplier unconfirmed)
L24Negative MeniscusLAC14 (HOYA; catalog ne 1.69980 as printed, vd 55.46 for the printed 55.5; supplier unconfirmed)
L31Biconvex Positive (2× Asph)Q-LASFH58S (HIKARI moulding glass; catalog ne 1.85612 as printed, vd 40.12 for the printed 40.1; supplier unconfirmed)
L32Biconvex PositiveFCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 for the printed 95.1; supplier unconfirmed)
L33Biconcave NegativeBAC4 (HOYA; catalog ne 1.57125 as printed, vd 56.04 for the printed 56.0; supplier unconfirmed)
L41Negative MeniscusTAFD55 (HOYA; catalog ne 2.00912 as printed, vd 29.13 for the printed 29.1; supplier unconfirmed)
L42Positive MeniscusFCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 for the printed 95.1; supplier unconfirmed)
L43Biconvex PositiveFCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 for the printed 95.1; supplier unconfirmed)
L44Biconcave NegativeNBFD25 (HOYA; catalog ne 1.86252 as printed, vd 25.15 for the printed 25.2; supplier unconfirmed)
L45Biconvex Positive (2× Asph)Q-LASFH58S (HIKARI moulding glass; catalog ne 1.85612 as printed, vd 40.12 for the printed 40.1; supplier unconfirmed)
L51Neg. Meniscus (2× Asph)Unmatched (printed coordinates; no vendor row at either the d or the e line; nearest e-line row is HOYA M-TAFD305 at 1.85639, 0.00020 below)
L61Biconvex Positive (2× Asph)Q-PSKH4S (HIKARI moulding glass; catalog ne 1.59456 as printed, vd 66.92 for the printed 66.9; supplier unconfirmed)
L71Positive MeniscusFDS16-W (HOYA; catalog ne 2.00009 as printed, vd 16.48 for the printed 16.5; supplier unconfirmed)
L72Negative MeniscusNBFD25 (HOYA; catalog ne 1.86252 as printed, vd 25.15 for the printed 25.2; supplier unconfirmed)
L73Negative MeniscusUnmatched (printed coordinates; no vendor row at either the d or the e line; nearest e-line row is HOYA M-TAFD305 at 1.85639, 0.00020 below)

Element	Type	Glass
L11	Negative Meniscus	FDS18 (HOYA; catalog ne 1.95825 as printed, vd 17.98 for the printed 18.0; supplier unconfirmed)
L12	Biconvex Positive	FCD515 (HOYA; catalog ne 1.59489 as printed, vd 68.62 for the printed 68.6; supplier unconfirmed)
L13	Positive Meniscus	PCD51 (HOYA; catalog ne 1.59561 as printed, vd 67.00 for the printed 67.0; supplier unconfirmed)
L21	Neg. Meniscus (2× Asph)	Unmatched (printed coordinates; no vendor row at either the d or the e line; nearest e-line rows are 0.0004 or more away)
L22	Biconcave Negative	NBFD29 (HOYA; catalog ne 1.77660 as printed, vd 29.74 for the printed 29.7; supplier unconfirmed)
L23	Biconvex Positive	FDS24 (HOYA; catalog ne 1.93024 as printed, vd 23.96 for the printed 24.0; supplier unconfirmed)
L24	Negative Meniscus	LAC14 (HOYA; catalog ne 1.69980 as printed, vd 55.46 for the printed 55.5; supplier unconfirmed)
L31	Biconvex Positive (2× Asph)	Q-LASFH58S (HIKARI moulding glass; catalog ne 1.85612 as printed, vd 40.12 for the printed 40.1; supplier unconfirmed)
L32	Biconvex Positive	FCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 for the printed 95.1; supplier unconfirmed)
L33	Biconcave Negative	BAC4 (HOYA; catalog ne 1.57125 as printed, vd 56.04 for the printed 56.0; supplier unconfirmed)
L41	Negative Meniscus	TAFD55 (HOYA; catalog ne 2.00912 as printed, vd 29.13 for the printed 29.1; supplier unconfirmed)
L42	Positive Meniscus	FCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 for the printed 95.1; supplier unconfirmed)
L43	Biconvex Positive	FCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 for the printed 95.1; supplier unconfirmed)
L44	Biconcave Negative	NBFD25 (HOYA; catalog ne 1.86252 as printed, vd 25.15 for the printed 25.2; supplier unconfirmed)
L45	Biconvex Positive (2× Asph)	Q-LASFH58S (HIKARI moulding glass; catalog ne 1.85612 as printed, vd 40.12 for the printed 40.1; supplier unconfirmed)
L51	Neg. Meniscus (2× Asph)	Unmatched (printed coordinates; no vendor row at either the d or the e line; nearest e-line row is HOYA M-TAFD305 at 1.85639, 0.00020 below)
L61	Biconvex Positive (2× Asph)	Q-PSKH4S (HIKARI moulding glass; catalog ne 1.59456 as printed, vd 66.92 for the printed 66.9; supplier unconfirmed)
L71	Positive Meniscus	FDS16-W (HOYA; catalog ne 2.00009 as printed, vd 16.48 for the printed 16.5; supplier unconfirmed)
L72	Negative Meniscus	NBFD25 (HOYA; catalog ne 1.86252 as printed, vd 25.15 for the printed 25.2; supplier unconfirmed)
L73	Negative Meniscus	Unmatched (printed coordinates; no vendor row at either the d or the e line; nearest e-line row is HOYA M-TAFD305 at 1.85639, 0.00020 below)