VIVITAR SERIES 1 200mm f/3.0 VMC — Optical Cross-Section & Ray Tracing

Home / Lenses / Vivitar / VIVITAR SERIES 1 200mm f/3.0 VMCVIVITAR SERIES 1 200mm f/3.0 VMCUS 3,942,876↗ — Ellis I. Betensky
6 elements / 6 groups
Sonnar-type telephoto with fixed rear corrector
All-spherical design
MFD 1.2 m (1:4 repro ratio)
72 mm filter thread
Focus MechanismUnit focus — front objective (L1–L5) translates as rigid unit; rear corrector L6 fixed to mount. Single variable gap between L5 and L6.
Optical Elements (6 physical)ElementTypeGlass
L1Positive Meniscus569631 — PSK2 phosphate crown (Schott)
L2Positive MeniscusBSC7 (HOYA) / N-BK7 (Schott)
L3Biconcave NegativeSF6 (Schott) / S-TIH6 (OHARA)
L4Positive MeniscusSF6 (Schott) / S-TIH6 (OHARA)
L5Negative MeniscusLAFL4 (HOYA catalog-equivalent; production supplier unspecified)
L6Negative MeniscusN-BALF4 (Schott; BaLF4-class equivalent)

Element	Type	Glass
L1	Positive Meniscus	569631 — PSK2 phosphate crown (Schott)
L2	Positive Meniscus	BSC7 (HOYA) / N-BK7 (Schott)
L3	Biconcave Negative	SF6 (Schott) / S-TIH6 (OHARA)
L4	Positive Meniscus	SF6 (Schott) / S-TIH6 (OHARA)
L5	Negative Meniscus	LAFL4 (HOYA catalog-equivalent; production supplier unspecified)
L6	Negative Meniscus	N-BALF4 (Schott; BaLF4-class equivalent)