OLYMPUS M.ZUIKO DIGITAL ED 8mm f/1.8 Fisheye PRO — Optical Cross-Section & Ray Tracing

Home / Lenses / Olympus / OLYMPUS M.ZUIKO DIGITAL ED 8mm f/1.8 Fisheye PROOLYMPUS M.ZUIKO DIGITAL ED 8mm f/1.8 Fisheye PROJP 2016-184136 A↗ — Yukihiro Yamamoto
17 ELEMENTS / 15 GROUPS
DESIGN f = 7.90 mm
DESIGN F/1.82
2ω = 197.08°
1 ASPHERICAL SURFACE / 1 ELEMENT
Focus MechanismInner focus: G2, the cemented doublet (surfaces 9A–11), moves 7.0212 mm toward the image from infinity to the closest published state; G1, G3, filter F and the image plane stay fixed. The patent publishes two states, infinity and a 120 mm object-to-image distance, which puts the object 23.4602 mm ahead of the front vertex on the 96.5398 mm track. Positions in between are interpolated.
Optical Elements (17 physical)ElementTypeGlass
L1Negative MeniscusTAFD55 (HOYA coordinate equivalent; supplier unconfirmed)
L2Negative MeniscusTAF1 (HOYA coordinate equivalent; supplier unconfirmed)
L3Biconvex PositiveFDS90 (HOYA coordinate equivalent; supplier unconfirmed)
L4Negative MeniscusTAF1 (HOYA coordinate equivalent; supplier unconfirmed)
L5Biconvex Positive (1× Asph)NBFD13 (HOYA coordinate equivalent; supplier unconfirmed)
L6Biconcave NegativeFDS90 (HOYA coordinate equivalent; supplier unconfirmed)
L7Biconvex PositiveTAFD45 (HOYA coordinate equivalent; supplier unconfirmed)
L8Positive MeniscusTAFD55 (HOYA coordinate equivalent; supplier unconfirmed)
L9Negative MeniscusFC5 (HOYA coordinate equivalent; supplier unconfirmed)
L10Biconvex PositiveFCD100 (HOYA coordinate equivalent; supplier unconfirmed)
L11Biconvex PositiveFCD100 (HOYA coordinate equivalent; supplier unconfirmed)
L12Biconcave NegativeFDS24 (HOYA coordinate equivalent; supplier unconfirmed)
L13Biconvex PositiveFCD505 (HOYA coordinate equivalent; supplier unconfirmed)
L14Negative MeniscusFDS90 (HOYA coordinate equivalent; supplier unconfirmed)
L15Biconvex PositiveTAF3 (HOYA coordinate equivalent; supplier unconfirmed)
L16Positive MeniscusFCD100 (HOYA coordinate equivalent; supplier unconfirmed)
L17Plano-ConvexFCD100 (HOYA coordinate equivalent; supplier unconfirmed)

Element	Type	Glass
L1	Negative Meniscus	TAFD55 (HOYA coordinate equivalent; supplier unconfirmed)
L2	Negative Meniscus	TAF1 (HOYA coordinate equivalent; supplier unconfirmed)
L3	Biconvex Positive	FDS90 (HOYA coordinate equivalent; supplier unconfirmed)
L4	Negative Meniscus	TAF1 (HOYA coordinate equivalent; supplier unconfirmed)
L5	Biconvex Positive (1× Asph)	NBFD13 (HOYA coordinate equivalent; supplier unconfirmed)
L6	Biconcave Negative	FDS90 (HOYA coordinate equivalent; supplier unconfirmed)
L7	Biconvex Positive	TAFD45 (HOYA coordinate equivalent; supplier unconfirmed)
L8	Positive Meniscus	TAFD55 (HOYA coordinate equivalent; supplier unconfirmed)
L9	Negative Meniscus	FC5 (HOYA coordinate equivalent; supplier unconfirmed)
L10	Biconvex Positive	FCD100 (HOYA coordinate equivalent; supplier unconfirmed)
L11	Biconvex Positive	FCD100 (HOYA coordinate equivalent; supplier unconfirmed)
L12	Biconcave Negative	FDS24 (HOYA coordinate equivalent; supplier unconfirmed)
L13	Biconvex Positive	FCD505 (HOYA coordinate equivalent; supplier unconfirmed)
L14	Negative Meniscus	FDS90 (HOYA coordinate equivalent; supplier unconfirmed)
L15	Biconvex Positive	TAF3 (HOYA coordinate equivalent; supplier unconfirmed)
L16	Positive Meniscus	FCD100 (HOYA coordinate equivalent; supplier unconfirmed)
L17	Plano-Convex	FCD100 (HOYA coordinate equivalent; supplier unconfirmed)