LEICA ELMARIT-R 35mm f/2.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Leica / LEICA ELMARIT-R 35mm f/2.8LEICA ELMARIT-R 35mm f/2.8FR 1,471,493↗
7 elements / 5 groups
f ≈ 35.1 mm
1:2.8
2ω ≈ 63.3°
all spherical
Focus MechanismUnit focusing. The patent publishes only the infinity prescription; close focus is approximated as rear BF extension to 0.30 m.
Optical Elements (7 physical)ElementTypeGlass
L1Negative MeniscusFK5 / N-FK5 class (Schott legacy; patent n_e)
L2Biconvex PositiveBaSF6 class; J-BASF6 catalog e-line spectral proxy (production supplier unspecified)
L3Negative MeniscusUnmatched (flint/barium-flint position; no confident public catalog match; patent n_e)
L4Biconvex PositiveUnmatched (SK16-class patent e-line value; no verified d-line catalog identity)
L5Biconcave NegativeUnmatched (dense flint; no confident public catalog match; patent n_e)
L6Negative MeniscusUnmatched (BaF13-class patent e-line value; no verified d-line catalog identity)
L7Biconvex PositiveUnmatched (LAK9-class lanthanum crown; patent e-line value stored)

Element	Type	Glass
L1	Negative Meniscus	FK5 / N-FK5 class (Schott legacy; patent n_e)
L2	Biconvex Positive	BaSF6 class; J-BASF6 catalog e-line spectral proxy (production supplier unspecified)
L3	Negative Meniscus	Unmatched (flint/barium-flint position; no confident public catalog match; patent n_e)
L4	Biconvex Positive	Unmatched (SK16-class patent e-line value; no verified d-line catalog identity)
L5	Biconcave Negative	Unmatched (dense flint; no confident public catalog match; patent n_e)
L6	Negative Meniscus	Unmatched (BaF13-class patent e-line value; no verified d-line catalog identity)
L7	Biconvex Positive	Unmatched (LAK9-class lanthanum crown; patent e-line value stored)