| Focal Length | 250mm |
| Maximum Aperture | f/5.6 |
| Lens Mount | M42 |
| Lens Format Coverage | Full-Frame |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Filter Size | 67 mm (Front) |
| Maximum Aperture | f/5.6 |
| Minimum Aperture | f/5.6 |
| Lens Mount | M42 |
| Lens Format Coverage | Full-Frame |
| Angle of View | 10° |
| Minimum Focus Distance | 6.6' / 2 m |
| Optical Design | 6 Elements in 5 Groups |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Filter Size | 67 mm (Front) |
| Weight | 13.4 oz / 380 g |
| Package Weight | 1.07 lb |
| Box Dimensions (LxWxH) | 5.3 x 4.2 x 4.2" |