GB 775,944 sole example - Agfa Camera-Werk AG
| 5 ELEMENTS / 3 GROUPS |
| f = 100.0 mm (scaled) |
| F/4.5 |
| ALL-SPHERICAL |
| ENLARGER OBJECTIVE |
Fixed enlarger objective. Focus is by moving the whole lens assembly; the close state is a 1:1 reference, not a manufacturer MFD.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | N-SK16 (Schott; SK16 legacy match) |
| L2 | Weakly Biconcave Negative | LLF4 class (Sumita legacy catalog; Schott-type) |
| L3 | Biconcave Negative | Unmatched (540/509 crown-flint-boundary glass; no public catalog match located) |
| L4 | Weakly Biconcave Negative | KF5 class (Sumita legacy catalog; Schott-type) |
| L5 | Biconvex Positive | N-SK16 (Schott; SK16 legacy match) |
Detailed analysis available in the interactive viewer above.