CANON EF 70-200mm f/4 L IS USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 70-200mm f/4 L IS USMCANON EF 70-200mm f/4 L IS USMJP 2008-070450 A↗ — Yoshiyuki Taki
20 ELEMENTS / 15 GROUPS
70-200mm f/4 (MARKETED)
72.11-194.28mm f/4.1 (PATENT TABLE)
IMAGE STABILIZATION
Focus MechanismNO_INTERNAL_RECONSTRUCTION: JP2008070450A Example 1 identifies L2 (surfaces 9-15) as the focus group but publishes no finite-focus spacing state. The data preserves only the three published infinity zoom states; 1.2 m is Canon production metadata and the zoom gaps repeat their infinity values at the close-focus endpoint.
Optical Elements (20 physical)ElementTypeGlass
L1-1Positive MeniscusS-FSL5 (OHARA) coordinate-compatible surrogate; supplier unspecified
L1-2Negative MeniscusS-TIM35 (OHARA) coordinate-compatible surrogate; supplier unspecified
L1-3Positive MeniscusFluorite (CaF2), inferred
L1-4Biconvex PositiveS-FPL51 (OHARA) coordinate-compatible surrogate; supplier unspecified
L2-1Biconcave NegativeS-LAH65 (OHARA) coordinate-compatible surrogate; supplier unspecified
L2-2Biconcave NegativeS-BSL7 (OHARA) coordinate-compatible surrogate; supplier unspecified
L2-3Biconvex Positive847239 — high-index flint class (vendor unresolved)
L2-4Negative MeniscusS-LAM66 (OHARA) coordinate-compatible surrogate; supplier unspecified
L3-1Biconvex PositiveS-BSM14 (OHARA) coordinate-compatible surrogate; supplier unspecified
L3-2Negative MeniscusS-LAM7 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gf-1Positive MeniscusS-LAH55V (OHARA) coordinate-compatible surrogate; supplier unspecified
Gf-2Negative MeniscusS-LAM7 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gf-3Positive MeniscusS-FPL51 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gm-1Biconvex PositiveS-LAH60 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gm-2Biconcave NegativeS-LAL14 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gm-3Biconcave NegativeS-LAL8 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-1Biconvex PositiveS-FSL5 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-2Biconvex PositiveS-FSL5 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-3Negative MeniscusS-LAH53 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-4Positive MeniscusS-LAH60 (OHARA) coordinate-compatible surrogate; supplier unspecified
TeleconvertersCANON EXTENDER EF2X

Element	Type	Glass
L1-1	Positive Meniscus	S-FSL5 (OHARA) coordinate-compatible surrogate; supplier unspecified
L1-2	Negative Meniscus	S-TIM35 (OHARA) coordinate-compatible surrogate; supplier unspecified
L1-3	Positive Meniscus	Fluorite (CaF2), inferred
L1-4	Biconvex Positive	S-FPL51 (OHARA) coordinate-compatible surrogate; supplier unspecified
L2-1	Biconcave Negative	S-LAH65 (OHARA) coordinate-compatible surrogate; supplier unspecified
L2-2	Biconcave Negative	S-BSL7 (OHARA) coordinate-compatible surrogate; supplier unspecified
L2-3	Biconvex Positive	847239 — high-index flint class (vendor unresolved)
L2-4	Negative Meniscus	S-LAM66 (OHARA) coordinate-compatible surrogate; supplier unspecified
L3-1	Biconvex Positive	S-BSM14 (OHARA) coordinate-compatible surrogate; supplier unspecified
L3-2	Negative Meniscus	S-LAM7 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gf-1	Positive Meniscus	S-LAH55V (OHARA) coordinate-compatible surrogate; supplier unspecified
Gf-2	Negative Meniscus	S-LAM7 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gf-3	Positive Meniscus	S-FPL51 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gm-1	Biconvex Positive	S-LAH60 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gm-2	Biconcave Negative	S-LAL14 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gm-3	Biconcave Negative	S-LAL8 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-1	Biconvex Positive	S-FSL5 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-2	Biconvex Positive	S-FSL5 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-3	Negative Meniscus	S-LAH53 (OHARA) coordinate-compatible surrogate; supplier unspecified
Gr-4	Positive Meniscus	S-LAH60 (OHARA) coordinate-compatible surrogate; supplier unspecified