SCHNEIDER-KREUZNACH RETINA-XENON C 50mm f/2 (Kodak Retina IIIc) — Optical Cross-Section & Ray Tracing

Home / Lenses / Schneider-Kreuznach / SCHNEIDER-KREUZNACH RETINA-XENON C 50mm f/2 (Kodak Retina IIIc)SCHNEIDER-KREUZNACH RETINA-XENON C 50mm f/2 (Kodak Retina IIIc)CH 352844↗ — Günter Klemt
6 ELEMENTS / 4 GROUPS
f = 50.003 mm
f/2
ALL-SPHERICAL
Focus MechanismInfinity/source prescription only; the marketed 0.762 m close-focus distance is retained without an internal focus reconstruction.
Optical Elements (6 physical)ElementTypeGlass
L1Positive Meniscus670472 — BAF10-class (supplier unresolved)
L2Positive MeniscusLAC13 — compatible spectral proxy (historical supplier/melt unresolved)
L3Negative Meniscus664359 — BASF2-class (supplier unresolved)
L4Biconcave Negative640346 — SF7-class (supplier unresolved)
L5Biconvex Positive658508 — SSK5-class (supplier unresolved)
L6Near-Plano-Convex PositiveN-LAF2 — compatible spectral proxy (historical supplier/melt unresolved)

Element	Type	Glass
L1	Positive Meniscus	670472 — BAF10-class (supplier unresolved)
L2	Positive Meniscus	LAC13 — compatible spectral proxy (historical supplier/melt unresolved)
L3	Negative Meniscus	664359 — BASF2-class (supplier unresolved)
L4	Biconcave Negative	640346 — SF7-class (supplier unresolved)
L5	Biconvex Positive	658508 — SSK5-class (supplier unresolved)
L6	Near-Plano-Convex Positive	N-LAF2 — compatible spectral proxy (historical supplier/melt unresolved)