HD PENTAX DA11 18mmF2.8ED DC AW Ultra wide angle zoom lens 17 27.5mm (Equivalent to 35mm format) All Weather resistant Extra sharp High contrast images Free of flare and ghost Smooth, quiet AF

In camera shake reduction (SR): The Pentax digital SLR K series cameras are equipped with the SR mechanism built into the camera body. Because shake reduction is applied in the camera body, this mean that any lens compatible with the K-Series cameras will benefit from image stabilisation. Pentax star series lens: High-performance star-series lens delivering higher imaging quality and exceptional resolving power HD coating to enhance imaging power: Produce high-contrast images with edge-to-edge sharpness and free of flare and ghost images Maximum aperture F2.8: Since its maximum aperture is fixed at F2.8 over the entire zoom range, it delivers sharp, bright images, working well even when capturing scenes with starry skies All weather (AW): This lens features a dependable dustproof, weather-resistant structure with eight special seals to prevent the intrusion of water and dust into the lens interior