CARL ZEISS JENA PI-FLEKTOGON 30mm f/2.8 (1975 e-line reconstruction)

Printed 1975 manufacturer sheet; monochromatic e-line/direct-contact research model. DD301976A7 Table 3 / Fig. 2 equivalence unverified.

7 ELEMENTS / 5 GROUPS
1975 PRINTED PRESCRIPTION
MONOCHROMATIC E-LINE RECONSTRUCTION

Focus Mechanism

Infinity prescription only. The source does not specify a minimum focus distance or lens travel, so finite focusing is not modeled.

Optical Elements (7 physical)

ElementTypeGlass
L1Negative MeniscusUnmatched (Carl Zeiss Jena historical SK 609/564 (SK2); source n_e only)
L2Biconvex PositiveUnmatched (Carl Zeiss Jena historical LaF 735/461; source n_e only)
L3Biconcave NegativeUnmatched (Carl Zeiss Jena historical KzF 531/515 (KzF2); source n_e only)
L4Biconcave NegativeUnmatched (Carl Zeiss Jena historical SF 734/281 (SF10); source n_e only)
L5Biconvex PositiveUnmatched (Carl Zeiss Jena historical SK 622/600 (SK16); source n_e only)
L6Positive MeniscusUnmatched (Carl Zeiss Jena historical SK 666/561 (SK24); source n_e only)
L7Biconvex PositiveUnmatched (Carl Zeiss Jena historical SK 625/566 (SK10); source n_e only)