CANON EF 180mm f/3.5 L Macro USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 180mm f/3.5 L Macro USMCANON EF 180mm f/3.5 L Macro USMJP 1997-211319 A↗ — Hideki Ogawa
14 ELEMENTS / 12 GROUPS
180mm f/3.5 MARKETED
f = 180.009 mm / f/3.6 DESIGN
1.0× / 0.48 m MFD
ALL-SPHERICAL
Focus MechanismPUBLISHED floating focus: L2 moves imageward and L3 moves objectward while the stop, L1, L4, and image plane remain fixed. Exact patent rows exist at infinity, 0.1×, 0.5×, and 1.0×; the current prime-focus schema stores the exact infinity and 1.0× endpoint spacings and interpolates between them.
Optical Elements (14 physical)ElementTypeGlass
L1Positive Meniscus487702 — crown class (supplier unresolved)
L2Biconvex Positive497816 — low-dispersion / UD crown class (supplier unresolved)
L3Negative Meniscus801350 — high-index class (supplier unresolved)
L4Positive Meniscus497816 — low-dispersion / UD crown class (supplier unresolved)
L5Negative Meniscus805254 — dense-flint class (supplier unresolved)
L6Positive Meniscus487702 — crown class (supplier unresolved)
L7Biconcave Negative883408 — high-index lanthanum class (supplier unresolved)
L8Biconcave Negative487702 — crown class (supplier unresolved)
L9Positive Meniscus847239 — dense-flint class (supplier unresolved)
L10Plano-Convex Positive762401 — lanthanum class (supplier unresolved)
L11Biconvex Positive497816 — low-dispersion / UD crown class (supplier unresolved)
L12Biconcave Negative593353 — flint class (supplier unresolved)
L13Negative Meniscus834372 — high-index lanthanum class (supplier unresolved)
L14Biconvex Positive487702 — crown class (supplier unresolved)

Element	Type	Glass
L1	Positive Meniscus	487702 — crown class (supplier unresolved)
L2	Biconvex Positive	497816 — low-dispersion / UD crown class (supplier unresolved)
L3	Negative Meniscus	801350 — high-index class (supplier unresolved)
L4	Positive Meniscus	497816 — low-dispersion / UD crown class (supplier unresolved)
L5	Negative Meniscus	805254 — dense-flint class (supplier unresolved)
L6	Positive Meniscus	487702 — crown class (supplier unresolved)
L7	Biconcave Negative	883408 — high-index lanthanum class (supplier unresolved)
L8	Biconcave Negative	487702 — crown class (supplier unresolved)
L9	Positive Meniscus	847239 — dense-flint class (supplier unresolved)
L10	Plano-Convex Positive	762401 — lanthanum class (supplier unresolved)
L11	Biconvex Positive	497816 — low-dispersion / UD crown class (supplier unresolved)
L12	Biconcave Negative	593353 — flint class (supplier unresolved)
L13	Negative Meniscus	834372 — high-index lanthanum class (supplier unresolved)
L14	Biconvex Positive	487702 — crown class (supplier unresolved)