CANON EF 11-24mm f/4 L USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 11-24mm f/4 L USMCANON EF 11-24mm f/4 L USMUS 2015/0146085 A1↗ — Takahiro Hatada
16 elements / 11 groups
11-24 mm f/4 marketed; 11.33-23.28 mm F/4.12 patent design
4 aspherical elements / 4 aspherical surfaces
1 Super UD-class + 1 UD-class position (inferred from catalog coordinates)
Rear focus: complete second powered unit
Focus MechanismRear focusing by moving the complete second powered unit L2 (surfaces 15-20). The patent publishes infinity-focus zoom spacings only; the data file does not synthesize finite-focus travel. Canon specifies 0.32 m MFD at 11 mm and 0.28 m at 24 mm.
Optical Elements (16 physical)ElementTypeGlass
E1Neg. Meniscus (1× Asph)S-LAH66 (OHARA special-order catalog; coordinate match, production melt not disclosed)
E2Neg. Meniscus (1× Asph)S-BAL42 (OHARA catalog equivalent for patent coordinate; production supplier unspecified)
E3Neg. Meniscus (1× Asph)M-TAFD305 (HOYA catalog equivalent for patent coordinate; production supplier unspecified)
E4Negative MeniscusS-FPM2 (OHARA; coordinate match, production melt not disclosed)
E5Biconcave NegativeS-FPL53 (OHARA; Super UD-class position inferred from Canon's construction diagram)
E6Biconvex PositiveS-NBH8 (OHARA; coordinate match, production melt not disclosed)
E7Negative MeniscusS-LAH99 (OHARA; coordinate match, production melt not disclosed)
E8Biconvex PositiveS-TIL27 (OHARA; coordinate match, production melt not disclosed)
E9Biconcave NegativeTAFD35 (HOYA; exact coordinate match, production melt not disclosed)
E10Biconvex PositiveS-TIH6 (OHARA; coordinate match, production melt not disclosed)
E11Negative MeniscusS-LAH58 (OHARA; coordinate match, production melt not disclosed)
E12Biconvex PositiveS-NSL36 (OHARA; coordinate match, production melt not disclosed)
E13Biconcave NegativeS-LAH55V (OHARA; coordinate match, production melt not disclosed)
E14Biconvex PositiveS-FPL51 (OHARA; UD-class position inferred from Canon's construction diagram)
E15Biconcave NegativeS-LAH58 (OHARA; coordinate match, production melt not disclosed)
E16Biconvex Positive (1× Asph)S-BAL42 (OHARA; coordinate match, production melt not disclosed)

Element	Type	Glass
E1	Neg. Meniscus (1× Asph)	S-LAH66 (OHARA special-order catalog; coordinate match, production melt not disclosed)
E2	Neg. Meniscus (1× Asph)	S-BAL42 (OHARA catalog equivalent for patent coordinate; production supplier unspecified)
E3	Neg. Meniscus (1× Asph)	M-TAFD305 (HOYA catalog equivalent for patent coordinate; production supplier unspecified)
E4	Negative Meniscus	S-FPM2 (OHARA; coordinate match, production melt not disclosed)
E5	Biconcave Negative	S-FPL53 (OHARA; Super UD-class position inferred from Canon's construction diagram)
E6	Biconvex Positive	S-NBH8 (OHARA; coordinate match, production melt not disclosed)
E7	Negative Meniscus	S-LAH99 (OHARA; coordinate match, production melt not disclosed)
E8	Biconvex Positive	S-TIL27 (OHARA; coordinate match, production melt not disclosed)
E9	Biconcave Negative	TAFD35 (HOYA; exact coordinate match, production melt not disclosed)
E10	Biconvex Positive	S-TIH6 (OHARA; coordinate match, production melt not disclosed)
E11	Negative Meniscus	S-LAH58 (OHARA; coordinate match, production melt not disclosed)
E12	Biconvex Positive	S-NSL36 (OHARA; coordinate match, production melt not disclosed)
E13	Biconcave Negative	S-LAH55V (OHARA; coordinate match, production melt not disclosed)
E14	Biconvex Positive	S-FPL51 (OHARA; UD-class position inferred from Canon's construction diagram)
E15	Biconcave Negative	S-LAH58 (OHARA; coordinate match, production melt not disclosed)
E16	Biconvex Positive (1× Asph)	S-BAL42 (OHARA; coordinate match, production melt not disclosed)