|   | |
| Maker | Pentax | 
|---|---|
| Lens mount(s) | Pentax K | 
| Technical data | |
| Type | Prime | 
| Focus drive | Screwdrive | 
| Focal length | 15mm | 
| Focal length (35mm equiv.) | 23mm | 
| Aperture (max/min) | f/4.0 | 
| Close focus distance | 0.18 metres (0.59 ft) | 
| Max. magnification | 0.15 | 
| Diaphragm blades | 7 | 
| Construction | 8 elements in 6 groups | 
| Features | |
| Manual focus override |  Yes | 
| Weather-sealing |  No | 
| Lens-based stabilization |  No | 
| Aperture ring |  No | 
| Physical | |
| Max. length | 40 millimetres (1.6 in) | 
| Diameter | 63 millimetres (2.5 in) | 
| Weight | 212 grams (0.467 lb) | 
| Filter diameter | 49mm | 
| Accessories | |
| Lens hood | built in | 
| History | |
| Introduction | 2009 | 
The Pentax smc DA 15mm F4 ED AL Limited is a wide-angle prime lens for Pentax K-mount, announced by Pentax on March 2, 2009. Along with Pentax's other DA Limited primes, it was replaced in 2013 with an HD-coated version with rounded aperture blades. [1]
 Media related to  SMC Pentax-DA 15mm F4 ED AL Limited  at Wikimedia Commons
  Media related to  SMC Pentax-DA 15mm F4 ED AL Limited  at Wikimedia Commons