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Specifications:
| Manufacturer | Pentax |
|---|---|
| Model | smc DA 21 mm f/3.2 AL Limited |
| Lens style | Wide angle |
| Focal length | 21 mm |
| Maximum aperture | f/3.2 |
| Angle of view | 68 o |
| Closest focusing distance | 0.2 m |
| Maximum magnification | 1:5.88 |
| Minimum aperture | 22 |
| Number of diaphragm blades | 7 |
| Auto focus type | AF |
| Lens Construction | 8 elements / 5 groups |
| Filter diameter | 43 mm |
| Macro | No |
| Available mounts | Pentax K |
| Dimensions | 63 x 25 mm |
| Weight | 140 g |
| Additional information | can be used with 43mm and 49mm filters |
