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Pentax 15mm f/4 SMC PENTAX-DA ED AL Limited Autofocus APS-C Lens for K-Mount, Black {49}
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$300.00
Pentax 15mm f/4 DA Limited: the pocketable APS-C wide prime.
At 40mm long and 212 grams, this lens fits in a jacket pocket without complaint. The 15mm focal length gives a 23mm equivalent field of view on APS-C, sitting in that useful zone between fisheye distortion and the compression of a standard wide. The optical formula runs 8 elements in 6 groups, including one ED glass element and one hybrid aspherical element that together minimize chromatic aberration and limit geometric distortion, keeping the wide-angle rendering natural than warped. HD multi-layer coating keeps flare and ghosting under control, and a SP coating on the front element resists oil and fingerprints.
The built-in lens hood means one less accessory to lose, and the non-rotating 49mm filter ring makes polarizer work straightforward. Seven rounded diaphragm blades keep out-of-focus areas smooth. Autofocus runs via screw drive from the camera body, with full-time manual override available through Pentax's Quick Shift system. Minimum focus distance is 0.18m, delivering 0.15x maximum magnification, enough to get close to foreground subjects for environmental detail shots. For Pentax K-mount shooters, this is a proven wide prime that still earns its place in the bag.
Who It's For
Architecture and interior photographers get a 23mm equivalent that keeps straight lines straight, thanks to the hybrid aspherical element's geometric distortion control. Street photographers working with Pentax APS-C bodies will value the compact 40mm length and 212g weight alongside a built-in hood that's always deployed when needed. Travel shooters benefit from the same physical profile, plus the SP-coated front element that handles real-world grime without fuss. Landscape photographers who want a wide prime for environmental foreground work have the 0.18m minimum focus distance to pull close subjects into frame without switching lenses.
Key Features
- 15mm focal length delivers 23mm equivalent field of view on APS-C
- 8 elements in 6 groups with ED glass and hybrid aspherical element minimize chromatic aberration and distortion
- f/4 maximum aperture with 7-blade rounded diaphragm for smooth bokeh
- HD multi-layer coating and SP front element coating reduce flare and resist contamination
- 0.18m minimum focus distance with 0.15x magnification for environmental detail shots
- Built-in lens hood and non-rotating 49mm filter ring streamline operation
- Screw drive autofocus with full-time manual focus override via Quick Shift
- Compact design: 40mm long, 212 grams, fits a jacket pocket
FAQ
- What's the real field of view on my APS-C Pentax?
- 15mm on APS-C gives you a 23mm equivalent angle of view - wide enough for landscapes and interiors without the extreme distortion of a fisheye.
- How close can you focus with this lens?
- Minimum focus distance is 0.18m (7 inches), with 0.15x maximum magnification. You can get close enough to isolate foreground detail in environmental shots.
- Does it have autofocus?
- Yes, via screw drive from the camera body. The Quick Shift system lets you override to manual focus without switching modes.
- Will I need a separate lens hood?
- No, it has a built-in hood. The non-rotating 49mm filter ring means you can use a polarizer without twisting the hood.
- How does it handle flare and color rendering?
- HD multi-layer coating minimizes flare and ghosting. The front element also gets an SP coating that resists oil and fingerprints.
- What's the build like for a 2009 lens?
- 40mm long, 212 grams, with a 7-blade rounded diaphragm that keeps bokeh smooth. It's designed to live in a jacket pocket without weight or bulk.
- Does this lens have image stabilization?
- No, but compatible Pentax camera bodies offer in-body stabilization that will work with it.
| Specification | Value |
|---|---|
| Focal Length | 15mm |
| Max Aperture | f/4 |
| Min Aperture | f/22 |
| Mount | Pentax KAF (K-Mount) |
| Stabilization | No |
| AF System | Yes |
| Min Focus Distance | 0.18 m (7.09") |
| Focal Length Equivalent 35mm | 23mm |
| Lens Type | Prime |
| AF Motor Type | Screw drive from camera |
| Full Time Manual Focus | Yes |
| Focus Method | Unit |
| IS Notes | Available via compatible camera body |
| Elements | 8 |
| Groups | 6 |
| Diaphragm Blades | 7 |
| Special Elements Coatings | 1 hybrid aspherical element, 1 ED (Extra-Low Dispersion) glass element, HD multi-layer coating |
| Maximum Magnification | 0.15x |
| Filter Thread | 49mm |
| Filter Ring Rotates On Focus | No |
| Aperture Ring | No |
| Distance Scale | Yes |
| DOF Scale | Yes |
| Diameter | 63 mm (2.48") |
| Length | 40 mm (1.56") |
| Color | Black |
| Hood Type | Built-in |
| Weight | 212 g (0.47 lb) |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Pentax |
|---|---|
| Filter Size | 49mm |
| Focus Type | Autofocus (camera motor) |
| Lens Mount | Pentax KAF2 (SMC-DA, SMC-DFA) |
| Lens Type | Wide-Angle |
| Max Focal Length | 15mm |
| Min Focal Length | 15mm |
