CANON RF 70-200mm f/2.8 L IS USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON RF 70-200mm f/2.8 L IS USMCANON RF 70-200mm f/2.8 L IS USMJP 2021-056407 A↗ — Makoto Nakahara, Shunji Iwamoto, Masato Katayose
17 ELEMENTS / 12 GROUPS / 7 ZOOM UNITS
f = 72.13–194.06 mm
F/2.89–2.91
Infinity-focus model; centered IS
2ω = 33.4–12.7°
2 ASPHERICAL SURFACES
Focus MechanismInfinity-focus model: Figure 5 shows G4 (L8/L9) focusing objectward and G6 (L15) imageward. G7 has no focus arrow. Finite-focus gaps are unpublished, so focus is disabled; 0.70 m is retained retail metadata, not a modeled conjugate. Zoom iris is inferred from source f-numbers; lateral IS is not simulated.
Optical Elements (17 physical)ElementTypeGlass
L1Positive MeniscusS-FPL51 — compatible catalog counterpart; patent identity unspecified
L2Negative MeniscusS-NBM51 — compatible catalog counterpart; patent identity unspecified
L3Plano-Convex PositiveS-FPL55 — compatible catalog counterpart; patent identity unspecified
L4Biconcave NegativeS-FPM2 — compatible catalog counterpart; patent identity unspecified
L5Biconcave NegativeS-LAH96 — compatible catalog counterpart; patent identity unspecified
L6Positive MeniscusS-NBH56 — compatible catalog counterpart; patent identity unspecified
L7Biconvex Positive (1× Asph)S-FPL51 — compatible catalog counterpart; patent identity unspecified
L8Biconcave NegativeS-FTM16 — compatible catalog counterpart; patent identity unspecified
L9Biconvex PositiveS-TIH10 — compatible catalog counterpart; patent identity unspecified
L10Negative MeniscusTAFD65 — compatible catalog counterpart; patent identity unspecified
L11Biconvex PositiveS-FPL51 — compatible catalog counterpart; patent identity unspecified
L12Biconvex PositiveS-FPL51 — compatible catalog counterpart; patent identity unspecified
L13Negative MeniscusTAFD65 — compatible catalog counterpart; patent identity unspecified
L14Biconvex PositiveTAFD37A — compatible catalog counterpart; patent identity unspecified
L15Negative MeniscusS-PHM52 — compatible catalog counterpart; patent identity unspecified
L16Positive MeniscusS-NBH56 — compatible catalog counterpart; patent identity unspecified
L17Neg. Meniscus (1× Asph)S-BAL42 — compatible catalog counterpart; patent identity unspecified

Element	Type	Glass
L1	Positive Meniscus	S-FPL51 — compatible catalog counterpart; patent identity unspecified
L2	Negative Meniscus	S-NBM51 — compatible catalog counterpart; patent identity unspecified
L3	Plano-Convex Positive	S-FPL55 — compatible catalog counterpart; patent identity unspecified
L4	Biconcave Negative	S-FPM2 — compatible catalog counterpart; patent identity unspecified
L5	Biconcave Negative	S-LAH96 — compatible catalog counterpart; patent identity unspecified
L6	Positive Meniscus	S-NBH56 — compatible catalog counterpart; patent identity unspecified
L7	Biconvex Positive (1× Asph)	S-FPL51 — compatible catalog counterpart; patent identity unspecified
L8	Biconcave Negative	S-FTM16 — compatible catalog counterpart; patent identity unspecified
L9	Biconvex Positive	S-TIH10 — compatible catalog counterpart; patent identity unspecified
L10	Negative Meniscus	TAFD65 — compatible catalog counterpart; patent identity unspecified
L11	Biconvex Positive	S-FPL51 — compatible catalog counterpart; patent identity unspecified
L12	Biconvex Positive	S-FPL51 — compatible catalog counterpart; patent identity unspecified
L13	Negative Meniscus	TAFD65 — compatible catalog counterpart; patent identity unspecified
L14	Biconvex Positive	TAFD37A — compatible catalog counterpart; patent identity unspecified
L15	Negative Meniscus	S-PHM52 — compatible catalog counterpart; patent identity unspecified
L16	Positive Meniscus	S-NBH56 — compatible catalog counterpart; patent identity unspecified
L17	Neg. Meniscus (1× Asph)	S-BAL42 — compatible catalog counterpart; patent identity unspecified