Carl Zeiss Jena Biotar 4cm f/2
| Company | Carl Zeiss Jena |
| Country | Germany |
| Year of manufacture | 1939 |
| Type | 24x24mm |
| Focal length | 40mm |
| Aperture | f/2 |
| Optics |  |
| coverage | Covers full frame at infinity |
| Company | Carl Zeiss Jena |
| Country | Germany |
| Year of manufacture | 1939 |
| Type | 24x24mm |
| Focal length | 40mm |
| Aperture | f/2 |
| Optics | |
| coverage | Covers full frame at infinity |
