PENTAX D FA MACRO 100mm F2.8 WR (Lens) This is a high-quality macro lens with a simplified weather-resistant construction. I am selling it because I am changing my system. I think the exterior is clean. There may be some dust inside the lens, but I am not an expert, so I am not sure. However, I don't think it will affect the photos. If you are concerned about the details, please refrain from purchasing to avoid any problems. Manufacturer Overview: It is possible to take life-size photos at a distance of 13cm from the tip of the lens to the subject. The high-quality aluminum alloy body with a simplified weather-resistant construction omits the aperture ring, achieving a compact and lightweight design. It suppresses ghosting and flare, and demonstrates sharp and high-contrast descriptive performance at all shooting distances. The adoption of a circular aperture beautifully depicts the bokeh of the background. Accessories Front cap, rear cap, lens hood Manufacturer: PENTAX Genre: Interchangeable lens for single-lens reflex cameras Lens type: Telephoto lens (macro) Filter diameter: 49mm Lens mount: K mount F-number (wide-angle end): F2.8 Focal length: 100mm Minimum shooting distance: 0.303m Maximum shooting magnification: 1x Weight: 340g Thank you for viewing.