The Pentax HD DA 10-17mm F3.5-4.5 ED [IF] Fish-Eye Lens is a unique and specialized lens designed for APS-C Pentax DSLR cameras. It offers a wide zoom range of 10-17mm, providing photographers with a versatile tool for capturing dramatic and dynamic perspectives.   

Key Features:

Fish-eye Zoom: The lens provides a unique fish-eye effect, with a nearly circular image at the wide end and a diagonal fish-eye effect at the telephoto end. This allows for creative and expressive photography.   

HD Coating: The lens features high-grade, multi-layer HD Coating, which reduces flare and ghosting, resulting in high-contrast images with excellent sharpness and color reproduction.   

Inner Focus (IF) Mechanism: The IF mechanism ensures fast and accurate autofocus, even at close focusing distances. This also helps to maintain a compact and lightweight design.   

Removable Lens Hood: The removable lens hood allows for nearly circular fish-eye images when used with full-frame Pentax cameras like the K-1 or K-1 Mark II.   

Compact and Lightweight: Despite its powerful capabilities, the lens is designed to be compact and lightweight, making it easy to carry and use.