The definitive equipment listing for Prakticas on the internet
| Main | Camera Bodies | Lenses | Accessories | Photo index | Contact |
| Lenses -> M42 -> Carl Zeiss Jena Sonnar 4/135 | |
| Construction - | 4 elements, 3 groups |
| Angular field - | 18° |
| Minimum focusing distance - | 1m |
| Diaphragm action - | Fully automatic |
| Minimum aperture - | f/22 |
| Filter size - | 49mm srew-in type |
| Weight - | ?g |
| Lens size - | 67X90mm |
| Description - | The lenses are single coated. Maximum aperture is a little tricky: it is f:4 at infinity, but only 5.6 at 1 meter. When focused from infinity (at f:4) to 1 meter, the aperture ring turns to f:5.6. |
Lens schema: |
|
| Back | Index | |