LEICA ELMARIT-M 135mm f/2.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Leica / LEICA ELMARIT-M 135mm f/2.8LEICA ELMARIT-M 135mm f/2.8US 3,108,152 Table II — Eugen Hermanni / Ernst Leitz GmbH
5 elements / 4 groups
f ≈ 135.1 mm
F/2.8
2ω = 18°
all-spherical
Focus MechanismUnit focus: the complete optical cell translates on the helical. BF close-focus value is computed paraxially for 1.5 m object distance from the image plane.
Optical Elements (5)ElementTypeGlass
L1Positive MeniscusLeitz proprietary / N-SK16-class crown (e-line source values)
L2Positive MeniscusLeitz proprietary / N-SK16-class crown (e-line source values)
L3Plano-ConvexUnmatched vintage BaK/SK-class crown (patent e-line values)
L4Plano-ConcaveUnmatched (SF5-class dense flint; e-line source values)
L5Positive MeniscusUnmatched SF8-class dense flint (Schott e-line source values; patent ne=1.69416, νe=30.9)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	Leitz proprietary / N-SK16-class crown (e-line source values)
L2	Positive Meniscus	Leitz proprietary / N-SK16-class crown (e-line source values)
L3	Plano-Convex	Unmatched vintage BaK/SK-class crown (patent e-line values)
L4	Plano-Concave	Unmatched (SF5-class dense flint; e-line source values)
L5	Positive Meniscus	Unmatched SF8-class dense flint (Schott e-line source values; patent ne=1.69416, νe=30.9)