OLYMPUS M.ZUIKO DIGITAL ED 17mm f/1.2 PRO — Optical Cross-Section & Ray Tracing

Home / Lenses / Olympus / OLYMPUS M.ZUIKO DIGITAL ED 17mm f/1.2 PROOLYMPUS M.ZUIKO DIGITAL ED 17mm f/1.2 PROUS 10,073,255 B2↗ — Masaru Morooka, Kenichi Nagasawa
15 ELEMENTS / 11 GROUPS
DESIGN f = 16.67 mm
DESIGN F/1.24
2ω = 67.55° (PATENT)
6 ASPHERICAL SURFACES / 3 ELEMENTS
Focus MechanismPUBLISHED infinity, CL1 and CL2 states (patent Example 4, Various data). Inner focus: only the negative cemented group G3 (L13–L14) moves, 2.67 mm toward the image by the printed d22 (2.66 mm by d25, a rounding difference in the patent); G1, the stop, G2 and G4 stay fixed. CL1 and CL2 place the object 813.34 mm and 94.99 mm in front of the first surface; CL2 is 199.99 mm from the image, matching the marketed 0.2 m minimum focus distance. Positions between the three printed states are interpolated, so intermediate distance readings are estimates.
Optical Elements (15 physical)ElementTypeGlass
L1Negative MeniscusS-FSL5 (OHARA; coordinate equivalent; supplier unconfirmed)
L2Negative Meniscus (2× Asph)FCD1 (HOYA; coordinate equivalent; supplier unconfirmed)
L3Biconvex PositiveTAFD55 (HOYA; coordinate equivalent; supplier unconfirmed)
L4Biconcave NegativeS-TIM5 (OHARA; coordinate equivalent; supplier unconfirmed)
L5Biconcave NegativeS-NBH52 (OHARA; coordinate equivalent; supplier unconfirmed)
L6Biconvex PositiveFCD515 (HOYA; coordinate equivalent; supplier unconfirmed)
L7Positive MeniscusS-LAM55 (OHARA; coordinate equivalent; supplier unconfirmed)
L8Biconvex PositiveFCD515 (HOYA; coordinate equivalent; supplier unconfirmed)
L9Negative MeniscusS-TIH53 (OHARA; coordinate equivalent; supplier unconfirmed)
L10Biconvex PositiveFCD100 (HOYA; coordinate equivalent; supplier unconfirmed)
L11Negative Meniscus (2× Asph)S-LAM60 (OHARA; coordinate equivalent; supplier unconfirmed)
L12Biconvex Positive (2× Asph)FCD1 (HOYA; coordinate equivalent; supplier unconfirmed)
L13Biconvex PositiveS-NBH57 (OHARA; coordinate equivalent; supplier unconfirmed)
L14Biconcave NegativeS-TIM39 (OHARA; coordinate equivalent; supplier unconfirmed)
L15Biconvex PositiveFCD515 (HOYA; coordinate equivalent; supplier unconfirmed)

Element	Type	Glass
L1	Negative Meniscus	S-FSL5 (OHARA; coordinate equivalent; supplier unconfirmed)
L2	Negative Meniscus (2× Asph)	FCD1 (HOYA; coordinate equivalent; supplier unconfirmed)
L3	Biconvex Positive	TAFD55 (HOYA; coordinate equivalent; supplier unconfirmed)
L4	Biconcave Negative	S-TIM5 (OHARA; coordinate equivalent; supplier unconfirmed)
L5	Biconcave Negative	S-NBH52 (OHARA; coordinate equivalent; supplier unconfirmed)
L6	Biconvex Positive	FCD515 (HOYA; coordinate equivalent; supplier unconfirmed)
L7	Positive Meniscus	S-LAM55 (OHARA; coordinate equivalent; supplier unconfirmed)
L8	Biconvex Positive	FCD515 (HOYA; coordinate equivalent; supplier unconfirmed)
L9	Negative Meniscus	S-TIH53 (OHARA; coordinate equivalent; supplier unconfirmed)
L10	Biconvex Positive	FCD100 (HOYA; coordinate equivalent; supplier unconfirmed)
L11	Negative Meniscus (2× Asph)	S-LAM60 (OHARA; coordinate equivalent; supplier unconfirmed)
L12	Biconvex Positive (2× Asph)	FCD1 (HOYA; coordinate equivalent; supplier unconfirmed)
L13	Biconvex Positive	S-NBH57 (OHARA; coordinate equivalent; supplier unconfirmed)
L14	Biconcave Negative	S-TIM39 (OHARA; coordinate equivalent; supplier unconfirmed)
L15	Biconvex Positive	FCD515 (HOYA; coordinate equivalent; supplier unconfirmed)