| Lens Name | Pentax-A |
| Focal Length | 50mm |
| Diaphram Scale | 2-22 |
| Auto/manual/preset diaphragm | Auto |
| Number of elements and groups | 5/5 |
| Angle of view | 46 |
| Closest focus (cm) | 45mm |
| Weigtht (gm) | 145 |
| Length of lens (mm) | 31 |
| Biggest barrel diameter (mm) | 63 |
| Filter size (mm) | 49 |
| Introduced | 1985 |
| Discontinued | 1998 |