DE 3026282 C2, sole example — Josef Weiß
| 4 ELEMENTS / 4 GROUPS |
| DESIGN f = 100 (SCALED ×0.9) |
| DESIGN F/8 |
| ALL SPHERICAL |
Unit focus by view-camera bellows; no internal focus groups. The slider varies only the back-focus gap, from 72.73 mm at infinity to 82.70 mm at a 1.0 m object-to-image distance. The close state is computed paraxially for illustration; neither the patent nor Rodenstock gives a minimum focus distance.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | N-SSK8 (SCHOTT catalog equivalent; production supplier unspecified) |
| L2 | Negative Meniscus | SF56A (SCHOTT catalog equivalent; production supplier unspecified) |
| L3 | Negative Meniscus | SF56A (SCHOTT catalog equivalent; production supplier unspecified) |
| L4 | Positive Meniscus | SSK2 (SUMITA catalog equivalent; production supplier unspecified) |