SIGMA 24mm f/2 DG DN | Contemporary — Optical Cross-Section & Ray Tracing

Home / Lenses / Sigma / SIGMA 24mm f/2 DG DN | ContemporarySIGMA 24mm f/2 DG DN | ContemporaryJP 2022-073433 A↗ — Takeshi Asakura
13 ELEMENTS / 11 GROUPS
DESIGN f = 24.00 mm
DESIGN F/2.07
2ω = 90.08°
4 ASPHERICAL SURFACES / 2 ELEMENTS
1 FLD + 2 SLD (INFERRED)
Focus MechanismPUBLISHED endpoints: G2 moves 5.3816 mm imageward from infinity to the native 255 mm object-to-image state; G1, stop and G3 remain fixed within source rounding. Intermediate gap interpolation is a model, not a published cam law. Marketed 245 mm minimum focus is not represented.
Optical Elements (13 physical)ElementTypeGlass
L11Negative MeniscusPCD51 (HOYA coordinate equivalent; production supplier unconfirmed)
L12Negative MeniscusFCD705 (HOYA coordinate equivalent; production supplier unconfirmed)
L13Biconcave NegativeFCD100 (HOYA coordinate equivalent; production supplier unconfirmed)
L14Biconvex PositiveFDS24 (HOYA coordinate equivalent; production supplier unconfirmed)
L15Negative MeniscusNBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)
L16Biconvex Positive (2× Asph)M-TAFD305 (HOYA coordinate equivalent; production supplier unconfirmed)
L17Negative MeniscusNBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)
L18Biconvex PositiveFCD705 (HOYA coordinate equivalent; production supplier unconfirmed)
L21Negative MeniscusE-FD2 (HOYA coordinate equivalent; production supplier unconfirmed)
L22Positive MeniscusFDS16-W (HOYA coordinate equivalent; production supplier unconfirmed)
L31Biconvex Positive (2× Asph)M-LAC130 (HOYA coordinate equivalent; production supplier unconfirmed)
L32Negative MeniscusNBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)
L33Negative MeniscusNBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)

Element	Type	Glass
L11	Negative Meniscus	PCD51 (HOYA coordinate equivalent; production supplier unconfirmed)
L12	Negative Meniscus	FCD705 (HOYA coordinate equivalent; production supplier unconfirmed)
L13	Biconcave Negative	FCD100 (HOYA coordinate equivalent; production supplier unconfirmed)
L14	Biconvex Positive	FDS24 (HOYA coordinate equivalent; production supplier unconfirmed)
L15	Negative Meniscus	NBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)
L16	Biconvex Positive (2× Asph)	M-TAFD305 (HOYA coordinate equivalent; production supplier unconfirmed)
L17	Negative Meniscus	NBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)
L18	Biconvex Positive	FCD705 (HOYA coordinate equivalent; production supplier unconfirmed)
L21	Negative Meniscus	E-FD2 (HOYA coordinate equivalent; production supplier unconfirmed)
L22	Positive Meniscus	FDS16-W (HOYA coordinate equivalent; production supplier unconfirmed)
L31	Biconvex Positive (2× Asph)	M-LAC130 (HOYA coordinate equivalent; production supplier unconfirmed)
L32	Negative Meniscus	NBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)
L33	Negative Meniscus	NBFD25 (HOYA coordinate equivalent; production supplier unconfirmed)