SIGMA 14-24mm f/2.8 DG DN | Art — Optical Cross-Section & Ray Tracing

Home / Lenses / Sigma / SIGMA 14-24mm f/2.8 DG DN | ArtSIGMA 14-24mm f/2.8 DG DN | ArtJP 2020-042221 A↗ — Ryo Shioda
18 ELEMENTS / 13 GROUPS
DESIGN f = 14.50–23.15 mm
DESIGN F/2.93
5 ASPHERICAL SURFACES / 3 ELEMENTS
1 FLD + 5 SLD (INFERRED)
Focus MechanismNO_INTERNAL_RECONSTRUCTION: patent G2 (GF, cemented L6/L7) moves imageward for near focus (¶0063, Figure 1 focus arrow), but the patent tabulates infinity spacings only at all three zoom stations. All authored zoom gaps retain their infinity values at both focus endpoints. 0.28 m is production metadata only; finite-conjugate simulation is not certified.
Optical Elements (18 physical)ElementTypeGlass
L1Neg. Meniscus (1× Asph)L-LAL13 class (OHARA coordinate equivalent; supplier unconfirmed)
L2Negative MeniscusFCD515 class (HOYA coordinate equivalent; supplier unconfirmed)
L3Neg. Meniscus (2× Asph)MP-PCD51-70 class (HOYA coordinate equivalent; supplier unconfirmed)
L4Biconcave NegativeFCD515 class (HOYA coordinate equivalent; supplier unconfirmed)
L5Positive MeniscusFDS90-SG class (HOYA coordinate equivalent; supplier unconfirmed)
L6Negative MeniscusFDS24-W class (HOYA coordinate equivalent; supplier unconfirmed)
L7Positive MeniscusFF8 class (HOYA coordinate equivalent; supplier unconfirmed)
L8Negative MeniscusFD225 class (HOYA coordinate equivalent; supplier unconfirmed)
L9Negative MeniscusFDS18-W class (HOYA coordinate equivalent; supplier unconfirmed)
L10Biconvex PositiveS-TIH4 class (OHARA coordinate equivalent; supplier unconfirmed)
L11Biconvex PositiveFCD100 class (HOYA coordinate equivalent; supplier unconfirmed)
L12Negative MeniscusS-NBH8 class (OHARA coordinate equivalent; supplier unconfirmed)
L13Biconvex PositiveFCD705 class (HOYA coordinate equivalent; supplier unconfirmed)
L14Biconcave NegativeTAFD45L class (HOYA coordinate equivalent; supplier unconfirmed)
L15Positive MeniscusE-FDS1-W class (HOYA coordinate equivalent; supplier unconfirmed)
L16Negative MeniscusTAFD30 class (HOYA coordinate equivalent; supplier unconfirmed)
L17Positive MeniscusFCD705 class (HOYA coordinate equivalent; supplier unconfirmed)
L18Pos. Meniscus (2× Asph)MP-FCD500-20 class (HOYA coordinate equivalent; supplier unconfirmed)

Element	Type	Glass
L1	Neg. Meniscus (1× Asph)	L-LAL13 class (OHARA coordinate equivalent; supplier unconfirmed)
L2	Negative Meniscus	FCD515 class (HOYA coordinate equivalent; supplier unconfirmed)
L3	Neg. Meniscus (2× Asph)	MP-PCD51-70 class (HOYA coordinate equivalent; supplier unconfirmed)
L4	Biconcave Negative	FCD515 class (HOYA coordinate equivalent; supplier unconfirmed)
L5	Positive Meniscus	FDS90-SG class (HOYA coordinate equivalent; supplier unconfirmed)
L6	Negative Meniscus	FDS24-W class (HOYA coordinate equivalent; supplier unconfirmed)
L7	Positive Meniscus	FF8 class (HOYA coordinate equivalent; supplier unconfirmed)
L8	Negative Meniscus	FD225 class (HOYA coordinate equivalent; supplier unconfirmed)
L9	Negative Meniscus	FDS18-W class (HOYA coordinate equivalent; supplier unconfirmed)
L10	Biconvex Positive	S-TIH4 class (OHARA coordinate equivalent; supplier unconfirmed)
L11	Biconvex Positive	FCD100 class (HOYA coordinate equivalent; supplier unconfirmed)
L12	Negative Meniscus	S-NBH8 class (OHARA coordinate equivalent; supplier unconfirmed)
L13	Biconvex Positive	FCD705 class (HOYA coordinate equivalent; supplier unconfirmed)
L14	Biconcave Negative	TAFD45L class (HOYA coordinate equivalent; supplier unconfirmed)
L15	Positive Meniscus	E-FDS1-W class (HOYA coordinate equivalent; supplier unconfirmed)
L16	Negative Meniscus	TAFD30 class (HOYA coordinate equivalent; supplier unconfirmed)
L17	Positive Meniscus	FCD705 class (HOYA coordinate equivalent; supplier unconfirmed)
L18	Pos. Meniscus (2× Asph)	MP-FCD500-20 class (HOYA coordinate equivalent; supplier unconfirmed)