| Brand | Coatings | Product line | Model | Aperture (ƒ) | Focal range (mm) | Optical Design (Elements / Groups) | Mount | Image Size | Filter size(s) | Serial # | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Isco-Göttingen | C | Westinar | 1:2.8/50 | ƒ2.8 – 16 | 50 | 4 / 3 | M42 | 35mm | Front: 41 | 124096 | Fairly stiff focus, image quality is poor at infinity. Reverse-Tessar lens design. |
| Count: 1 |
