The Sigma 10-20mm F4-5.6 EX DC Lens is a powerful, versatile wide-angle zoom lens specifically crafted for digital SLR cameras. Designed to match the smaller sensor size of these cameras, it offers a lightweight and compact form factor without compromising optical performance. With an approximate focal range of 15–30mm on APS-C sensors, this lens excels at capturing expansive landscapes, intricate interiors, and dramatic architectural compositions. The optical construction includes three Special Low Dispersion (SLD) elements and two aspherical lenses to effectively minimize chromatic aberrations and distortion across the zoom range. The lens's Internal Focusing (IF) system ensures fast and smooth autofocus operation, while its design supports a non-rotating front element, making it convenient for polarizing or graduated filters. A minimum focusing distance of 9.4" (24cm) across all focal lengths enhances its versatility, allowing for dynamic close-up photography with dramatic perspectives. As part of Sigma’s EX series, this lens exemplifies engineering excellence and innovative technology, making it an essential tool for photographers seeking to push the boundaries of creative expression. This Bundle Includes: Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras 64 GB Memory Card Lens Pouch Lens Case Lens Hood Lens Caps Filter Kit Cleaning Kit Cap Keeper Card Reader Card Wallet