Pentax DA 21mm Limited lens
 | |
| Maker | Pentax |
|---|---|
| Lens mount(s) | Pentax K |
| Technical data | |
| Type | Prime |
| Focus drive | Screwdrive |
| Focal length | 21mm |
| Focal length (35mm equiv.) | 32mm |
| Aperture (max/min) | f/3.2 |
| Close focus distance | 0.20 metres (0.66 ft) |
| Max. magnification | 0.17 |
| Diaphragm blades | 7 |
| Construction | 8 elements in 5 groups |
| Features | |
| Manual focus override |
 |
| Weather-sealing |
 |
| Lens-based stabilization |
|
| Aperture ring |
|
| Physical | |
| Max. length | 25 millimetres (0.98 in) |
| Diameter | 63 millimetres (2.5 in) |
| Weight | 140 grams (0.31 lb) |
| Filter diameter | 49mm |
| History | |
| Introduction | 2006 |
The Pentax smc DA 21mm F3.2 AL Limited is a moderate wide angle lens announced by Pentax on February 13, 2006. It is one of the five very compact "Limited" prime lenses for APS-C format cameras. Like its siblings, it was replaced in 2013 with a version that is HD-coated and has rounded aperture blades.
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