The Pentax HD DA 11-18mm f/2.8 ED DC WR is a high-performance ultra-wide-angle zoom lens designed for Pentax APS-C format DSLR cameras. It features a constant f/2.8 aperture, making it ideal for landscape, architecture, and astrophotography.
Key Features:
- Optical Construction: 16 elements in 11 groups, including extra-low dispersion (ED) and aspherical elements for superior image quality.
- Autofocus System: Features DC motor-driven autofocus, ensuring smooth and quiet focusing, with Quick-Shift Focus for manual fine-tuning.
- Weather Resistance: AW (All-Weather) sealing protects against dust and moisture, ensuring durability in challenging environments.
- Focus Clamp Mechanism: Allows locking focus at a specific point, useful for astro and landscape photography.
- Super Multi-Coating (SMC) & Super Protect (SP) Coating: Reduces flare and ghosting while repelling water, dust, and grease.
- Rounded 9-Blade Diaphragm: Produces smooth and natural bokeh for artistic depth-of-field effects.
- Filter Compatibility: Accepts 82mm filters, with a petal-shaped hood featuring a removable door for easy access to polarizing filters.
This lens is a premium ultra-wide zoom with fast aperture, weather sealing, and precision autofocus, making it a great choice for professional and enthusiast photographers.
Specifications for the Pentax HD DA 11-18mm f/2.8 ED DC WR:
| Specification |
Details |
| Focal Length |
11-18mm |
| Maximum Aperture |
f/2.8 (constant) |
| Minimum Aperture |
f/22 |
| Lens Mount |
Pentax K-mount |
| Format Compatibility |
APS-C |
| Optical Construction |
16 elements in 11 groups |
| Special Elements |
Extra-low dispersion (ED), Aspherical elements |
| Autofocus System |
DC motor-driven autofocus, Quick-Shift Focus |
| Focus Type |
Autofocus with manual override |
| Internal Focusing (IF) |
Yes |
| Minimum Focus Distance |
30 cm / 11.8 in |
| Maximum Magnification |
0.1x |
| Diaphragm Blades |
9, rounded |
| Image Stabilization |
None (relies on camera body stabilization) |
| Filter Thread |
82mm |
| Weather Resistance |
Yes (AW - All-Weather sealing) |
| Coating |
Super Multi-Coating (SMC), Super Protect (SP) |
| Focus Clamp Mechanism |
Yes (locks focus for astro/landscape photography) |
| Dimensions |
Approx. 90mm (Diameter) x 100mm (Length) |
| Weight |
Approx. 704g / 24.8oz |
