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 Example 1 — Optische Werke G. Rodenstock
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)ElementTypeGlass
L1Negative MeniscusUnmatched (K5/N-K5-class crown; DE2635415 lists n_e=1.5246, v_e=59.22)
L2Negative MeniscusUnmatched (legacy dense flint; DE2635415 lists n_e=1.7343, v_e=28.47)
L3Positive MeniscusUnmatched (BaF8/J-BAF8-class glass; DE2635415 lists n_e=1.6269, v_e=46.71)
L4Biconvex PositiveUnmatched (BaSF4-class glass; DE2635415 lists n_e=1.6541, v_e=38.86)
L5Negative MeniscusUnmatched (legacy dense flint; DE2635415 lists n_e=1.7273, v_e=29.02)
L6Negative MeniscusUnmatched (K5/N-K5-class crown; DE2635415 lists n_e=1.5246, v_e=59.22)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Negative Meniscus	Unmatched (K5/N-K5-class crown; DE2635415 lists n_e=1.5246, v_e=59.22)
L2	Negative Meniscus	Unmatched (legacy dense flint; DE2635415 lists n_e=1.7343, v_e=28.47)
L3	Positive Meniscus	Unmatched (BaF8/J-BAF8-class glass; DE2635415 lists n_e=1.6269, v_e=46.71)
L4	Biconvex Positive	Unmatched (BaSF4-class glass; DE2635415 lists n_e=1.6541, v_e=38.86)
L5	Negative Meniscus	Unmatched (legacy dense flint; DE2635415 lists n_e=1.7273, v_e=29.02)
L6	Negative Meniscus	Unmatched (K5/N-K5-class crown; DE2635415 lists n_e=1.5246, v_e=59.22)