CANON EF 15mm f/2.8 Fisheye — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 15mm f/2.8 FisheyeCANON EF 15mm f/2.8 FisheyeJP S63-17421 A↗ — Takashi Matsushita
8 ELEMENTS / 7 GROUPS
PATENT F = 15.3 mm
TRACED EFL = 15.2865 mm
F/2.8
180° DIAGONAL FISHEYE
ALL SPHERICAL
Focus MechanismOverall linear extension / unit focus; 2.13274 mm extension from infinity to 0.20 m.
Optical Elements (8 physical)ElementTypeGlass
L1Negative MeniscusS-BSM14 (OHARA exact catalog equivalent; patent vendor unspecified)
L2Negative MeniscusS-PHM51 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L3Negative MeniscusS-BSM14 (OHARA exact catalog equivalent; patent vendor unspecified)
L4Biconvex PositiveS-NPH53 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L5Positive MeniscusNSL7 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L6Biconcave NegativeS-NPH53 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L7Biconvex PositiveS-FSL5 (OHARA exact catalog equivalent; patent vendor unspecified)
L8Biconvex PositiveS-FSL5 (OHARA exact catalog equivalent; patent vendor unspecified)

Element	Type	Glass
L1	Negative Meniscus	S-BSM14 (OHARA exact catalog equivalent; patent vendor unspecified)
L2	Negative Meniscus	S-PHM51 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L3	Negative Meniscus	S-BSM14 (OHARA exact catalog equivalent; patent vendor unspecified)
L4	Biconvex Positive	S-NPH53 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L5	Positive Meniscus	NSL7 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L6	Biconcave Negative	S-NPH53 (OHARA historical exact catalog equivalent; patent vendor unspecified)
L7	Biconvex Positive	S-FSL5 (OHARA exact catalog equivalent; patent vendor unspecified)
L8	Biconvex Positive	S-FSL5 (OHARA exact catalog equivalent; patent vendor unspecified)