RODENSTOCK GRANDAGON-N 75mm f/6.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Rodenstock / RODENSTOCK GRANDAGON-N 75mm f/6.8RODENSTOCK GRANDAGON-N 75mm f/6.8DE 26 35 415 B1↗ — Franz Schlegel, Josef Weiß
6 ELEMENTS / 4 GROUPS
f = 75 mm
F/6.8
2ω = 102°
IMAGE CIRCLE 187 mm
ALL-SPHERICAL
Focus MechanismUnit focus by camera bellows; BF close state is a 1.0 m visualization reference.
Optical Elements (6 physical)ElementTypeGlass
L1Negative MeniscusK5 class; K5 catalog e-line spectral proxy (production supplier unspecified)
L2Negative MeniscusUnmatched (legacy dense flint; DE2635415 lists n_e=1.7343, v_e=28.47)
L3Positive MeniscusBaF8 class; E-BAF8 catalog e-line spectral proxy (production supplier unspecified)
L4Biconvex PositiveUnmatched (BaSF4-class glass; DE2635415 lists n_e=1.6541, v_e=38.86)
L5Negative MeniscusSF18 class; S-TIH18 catalog e-line spectral proxy (production supplier unspecified)
L6Negative MeniscusK5 class; K5 catalog e-line spectral proxy (production supplier unspecified)

Element	Type	Glass
L1	Negative Meniscus	K5 class; K5 catalog e-line spectral proxy (production supplier unspecified)
L2	Negative Meniscus	Unmatched (legacy dense flint; DE2635415 lists n_e=1.7343, v_e=28.47)
L3	Positive Meniscus	BaF8 class; E-BAF8 catalog e-line spectral proxy (production supplier unspecified)
L4	Biconvex Positive	Unmatched (BaSF4-class glass; DE2635415 lists n_e=1.6541, v_e=38.86)
L5	Negative Meniscus	SF18 class; S-TIH18 catalog e-line spectral proxy (production supplier unspecified)
L6	Negative Meniscus	K5 class; K5 catalog e-line spectral proxy (production supplier unspecified)