NIKON AF-S NIKKOR 58mm f/1.4G

JP2013-019993A EXAMPLE 2 (NEAR MATCH) — NIKON / HARUO SATO

9 ELEMENTS / 5 GROUPS (patent) · 6 GROUPS (production)
f ≈ 58.0 mm
F/1.4
2ω ≈ 41.7°
2 ASPHERICAL SURFACES

Focus Mechanism

Unit focus — entire optical assembly translates forward via SWM helicoid. BFD increases at close focus.

Optical Elements (9)

ElementTypeGlass
LaPos. Meniscus (1× Asph)Lanthanum dense flint (LASF-type, nd/νd match uncertain)
Lb1pPositive MeniscusS-LAL14 / N-LAK12 (lanthanum crown)
Lb1nNegative MeniscusS-FSL5 / FK5 (fluorine crown, low dispersion)
Lb2Negative MeniscusS-TIH4 / N-SF8 (dense flint)
LcnBiconcave NegativeS-TIH11 / N-SF10 (dense flint)
LcpBiconvex PositiveS-LAH58 / N-LASF44 (high-index lanthanum)
Ldp1Biconvex PositiveS-LAH58 / N-LASF44 (high-index lanthanum, same family as Lcp)
LdnBiconcave NegativeUnmatched (KZFS2-type short flint; S-NBM51 name rejected by stored nd/vd)
Ldp2Biconvex Positive (1× Asph)Same as La (lanthanum dense flint, LASF-type)

Analysis

Detailed analysis available in the interactive viewer above.