MAMIYA AF APO 300mm f/4.5 IF — Optical Cross-Section & Ray Tracing

Home / Lenses / Mamiya / MAMIYA AF APO 300mm f/4.5 IFMAMIYA AF APO 300mm f/4.5 IFJP H10-206729 A↗ — Hideyuki Suga
8 ELEMENTS / 8 GROUPS
300mm f/4.5
DESIGN f/4.63
2ω = 13.59°
3.00m MFD
Focus MechanismPUBLISHED inner focus: negative G2 (L5–L6) translates 14.423 mm imageward. The printed Example-1 d8/d12 endpoints are preserved; the patent's '700' close-distance label conflicts with those spacings and is not corrected.
Optical Elements (8 physical)ElementTypeGlass
L1Plano-Convex PositiveS-FSL 5 class (OHARA 487702 reference)
L2Positive Meniscus (convex to object)S-FPL51 class (OHARA 497816 reference)
L3Negative Meniscus (convex to object)S-NBM51 class (OHARA 613443 reference)
L4Positive Meniscus (convex to object)S-FPL51 class (OHARA 497816 reference)
L5Biconcave NegativeS-BAL12 class (OHARA 540595 reference)
L6Positive Meniscus (convex to object)S-TIH14 class (OHARA 762265 reference)
L7Biconvex PositiveS-FSL 5 class (OHARA 487702 reference)
L8Negative Meniscus (convex to image)S-LAL 8 class (OHARA 713539 reference)

Element	Type	Glass
L1	Plano-Convex Positive	S-FSL 5 class (OHARA 487702 reference)
L2	Positive Meniscus (convex to object)	S-FPL51 class (OHARA 497816 reference)
L3	Negative Meniscus (convex to object)	S-NBM51 class (OHARA 613443 reference)
L4	Positive Meniscus (convex to object)	S-FPL51 class (OHARA 497816 reference)
L5	Biconcave Negative	S-BAL12 class (OHARA 540595 reference)
L6	Positive Meniscus (convex to object)	S-TIH14 class (OHARA 762265 reference)
L7	Biconvex Positive	S-FSL 5 class (OHARA 487702 reference)
L8	Negative Meniscus (convex to image)	S-LAL 8 class (OHARA 713539 reference)