CANON EF 70-300mm f/4.5-5.6 DO IS USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 70-300mm f/4.5-5.6 DO IS USMCANON EF 70-300mm f/4.5-5.6 DO IS USMJP 2004-317867 A↗ — Hiroshi Endo
17 ELEMENTS / 14 AIR-SPACED ASSEMBLIES
7 FUNCTIONAL ZOOM GROUPS
DESIGN 72.10-290.07 mm
NOMINAL f/4.6-5.8
PRODUCT 3-LAYER DO / MODEL +1 PHASE
1 ASPHERE
L2 IMAGE STABILIZATION / L6 IMAGEWARD REAR FOCUS
Focus MechanismPATENT_CAM_SAMPLED: patent group L6 translates imageward with D25 + D31 conserved. The W/M/T close pairs evaluate the printed focus-cam polynomial at the reconstructed zoom coordinates; Table 2 independently rounds the endpoint shifts to 0.71 and 7.93 mm at 1.5 m. The marketed 1.4 m MFD is metadata only.
Optical Elements (17 physical)ElementTypeGlass
E1Positive MeniscusS-FSL5 (OHARA catalog surrogate; patent identity unresolved)
E2Negative Meniscus834372 class (vendor unresolved; multiple catalog equivalents)
E3Biconvex PositiveS-BSL7 (OHARA catalog surrogate; patent identity unresolved)
E4Biconcave NegativeS-LAL8 (OHARA catalog surrogate; patent identity unresolved)
E5Biconcave NegativeS-BSM15 (OHARA catalog surrogate; patent identity unresolved)
E6Biconvex Positive847239 class (vendor unresolved; multiple catalog equivalents)
E7Biconvex Positive (1x Asph)S-BAL42 (OHARA catalog surrogate; patent identity unresolved)
E8Negative MeniscusS-TIH6 (OHARA catalog surrogate; patent identity unresolved)
E9Negative MeniscusS-LAH97 (OHARA catalog surrogate; patent identity unresolved)
E10Positive MeniscusS-NSL36 (OHARA catalog surrogate; patent identity unresolved)
E11Negative MeniscusS-TIH6 (OHARA catalog surrogate; patent identity unresolved)
E12Biconvex PositiveS-FSL5 (OHARA catalog surrogate; patent identity unresolved)
E13Positive MeniscusS-BSM14 (OHARA catalog surrogate; patent identity unresolved)
E14Negative Meniscus835427 class (vendor unresolved; multiple catalog equivalents)
E15Biconvex PositiveS-TIH10 (OHARA catalog surrogate; patent identity unresolved)
E16Biconcave Negative835427 class (vendor unresolved; multiple catalog equivalents)
E17Positive MeniscusS-BAL42 (OHARA catalog surrogate; patent identity unresolved)

Element	Type	Glass
E1	Positive Meniscus	S-FSL5 (OHARA catalog surrogate; patent identity unresolved)
E2	Negative Meniscus	834372 class (vendor unresolved; multiple catalog equivalents)
E3	Biconvex Positive	S-BSL7 (OHARA catalog surrogate; patent identity unresolved)
E4	Biconcave Negative	S-LAL8 (OHARA catalog surrogate; patent identity unresolved)
E5	Biconcave Negative	S-BSM15 (OHARA catalog surrogate; patent identity unresolved)
E6	Biconvex Positive	847239 class (vendor unresolved; multiple catalog equivalents)
E7	Biconvex Positive (1x Asph)	S-BAL42 (OHARA catalog surrogate; patent identity unresolved)
E8	Negative Meniscus	S-TIH6 (OHARA catalog surrogate; patent identity unresolved)
E9	Negative Meniscus	S-LAH97 (OHARA catalog surrogate; patent identity unresolved)
E10	Positive Meniscus	S-NSL36 (OHARA catalog surrogate; patent identity unresolved)
E11	Negative Meniscus	S-TIH6 (OHARA catalog surrogate; patent identity unresolved)
E12	Biconvex Positive	S-FSL5 (OHARA catalog surrogate; patent identity unresolved)
E13	Positive Meniscus	S-BSM14 (OHARA catalog surrogate; patent identity unresolved)
E14	Negative Meniscus	835427 class (vendor unresolved; multiple catalog equivalents)
E15	Biconvex Positive	S-TIH10 (OHARA catalog surrogate; patent identity unresolved)
E16	Biconcave Negative	835427 class (vendor unresolved; multiple catalog equivalents)
E17	Positive Meniscus	S-BAL42 (OHARA catalog surrogate; patent identity unresolved)