DE 1,089,183 — Günther Lange
| 8 ELEMENTS / 6 GROUPS |
| f = 35.0 mm |
| F/3.2 |
| 2ω ≈ 64° |
| ALL SPHERICAL |
Unit focusing — entire lens assembly moves via camera body helical mechanism; only back focal distance changes.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | S-TIH3 (OHARA catalog equivalent; production supplier unspecified) |
| L2 | Negative Meniscus | LaF2 class; N-LAF2 catalog spectral proxy (production supplier unspecified) |
| L3 | Positive Meniscus | PK1 class; PC1 catalog spectral proxy (production supplier unspecified) |
| L4 | Biconvex Positive | PK1 class; PC1 catalog spectral proxy (production supplier unspecified) |
| L5 | Negative Meniscus | LaF2 class; N-LAF2 catalog spectral proxy (production supplier unspecified) |
| L6 | Biconcave Negative | H-F6 (CDGM catalog equivalent; production supplier unspecified) |
| L7 | Negative Meniscus | LLF7 (Schott) |
| L8 | Biconvex Positive | LaK10 class; J-LAK10 catalog spectral proxy (production supplier unspecified) |