NIKON AF-S FISHEYE NIKKOR 8-15mm f/3.5-4.5E ED — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON AF-S FISHEYE NIKKOR 8-15mm f/3.5-4.5E EDNIKON AF-S FISHEYE NIKKOR 8-15mm f/3.5-4.5E EDJP 2017-068114 A↗ — Tetsushi Miwa, Hiroshi Yamamoto, Haruo Sato
18 ELEMENTS / 13 GROUPS — PATENT EXAMPLE
8.17997–15.45007mm DESIGN
f/3.56351–4.67681 DESIGN
178.284°–175.002° FULL FIELD
1 ASPHERICAL SURFACE
PUBLISHED INTERNAL FOCUS
Focus MechanismPUBLISHED: G2A (L21–L24) translates imageward. The patent close rows use β = −0.03333 and object distances from the focal plane of 0.352460, 0.461387, and 0.573028 m at W/M/T; they do not represent the production lens's 0.16 m MFD.
Optical Elements (18 physical)ElementTypeGlass
L11Negative Meniscus, convex to objectJ-LAK18 (HIKARI)
L12Neg. Meniscus (1× Asph), convex to object592670 — low-dispersion crown class (closest M-PCD51, HOYA; vendor unproven)
L13Biconcave NegativeJ-PSKH1 (HIKARI)
L14Positive Meniscus, convex to objectJ-SF6 (HIKARI)
L15Biconcave NegativeJ-PSKH1 (HIKARI)
L21Positive Meniscus, convex to objectJ-LAF2 (HIKARI)
L22Negative Meniscus, concave to objectJ-LASF08A class (HIKARI)
L23Biconcave NegativeJ-LASF08A class (HIKARI)
L24Biconvex PositiveJ-BAF10 (HIKARI)
L25Negative Meniscus, concave to objectJ-LASF08A class (HIKARI)
L26Positive Meniscus, concave to objectJ-K3 (HIKARI)
L27Biconvex PositiveJ-F5 (HIKARI)
L28Negative Meniscus, concave to objectJ-LASF08A class (HIKARI)
L29Biconcave NegativeJ-LASF08A class (HIKARI)
L210Positive Meniscus, convex to objectJ-FKH1 (HIKARI)
L211Negative Meniscus, convex to objectJ-LASF08A class (HIKARI)
L212Biconvex PositiveJ-FKH1 (HIKARI)
L213Biconvex Positive487704 — fluor-crown class (closest FC5, HOYA; vendor unproven)

Element	Type	Glass
L11	Negative Meniscus, convex to object	J-LAK18 (HIKARI)
L12	Neg. Meniscus (1× Asph), convex to object	592670 — low-dispersion crown class (closest M-PCD51, HOYA; vendor unproven)
L13	Biconcave Negative	J-PSKH1 (HIKARI)
L14	Positive Meniscus, convex to object	J-SF6 (HIKARI)
L15	Biconcave Negative	J-PSKH1 (HIKARI)
L21	Positive Meniscus, convex to object	J-LAF2 (HIKARI)
L22	Negative Meniscus, concave to object	J-LASF08A class (HIKARI)
L23	Biconcave Negative	J-LASF08A class (HIKARI)
L24	Biconvex Positive	J-BAF10 (HIKARI)
L25	Negative Meniscus, concave to object	J-LASF08A class (HIKARI)
L26	Positive Meniscus, concave to object	J-K3 (HIKARI)
L27	Biconvex Positive	J-F5 (HIKARI)
L28	Negative Meniscus, concave to object	J-LASF08A class (HIKARI)
L29	Biconcave Negative	J-LASF08A class (HIKARI)
L210	Positive Meniscus, convex to object	J-FKH1 (HIKARI)
L211	Negative Meniscus, convex to object	J-LASF08A class (HIKARI)
L212	Biconvex Positive	J-FKH1 (HIKARI)
L213	Biconvex Positive	487704 — fluor-crown class (closest FC5, HOYA; vendor unproven)