| Optical specification | |
| Lens construction | 5 elements in 4 groups |
| Angle of view | 39° (when used with *istD, *istDS) |
| Minimum aperture | F22 |
| Minimum focusing distance | 0.4m |
| Maximum magnification | 0.13X |
| Physical specification | |
| Lens mount | PENTAX KAF mount |
| Aperture control | Automatic |
| Metering system | TTL open-aperture metering |
| Number of diaphragm blades | 9 |
| Filter size | 49mm |
| Dimensions (diameter x length) | 63mm x 15mm |
| Weight | 90g (w/o hood) |
