This full-frame 9mm f/5.6 Lens from 7artisans Photoelectric offers an expansive ultra-wide perspective, specifically designed for Sony E-mount cameras. It is particularly effective for capturing interior spaces, architectural structures, natural scenes, and landscapes. The lens features a sophisticated optical configuration that incorporates extra-low dispersion, aspherical, and high refractive index elements, which work together to minimize various aberrations and distortions, ensuring exceptional sharpness, clarity, and color fidelity. With a manual focus mechanism, it allows for close-up photography at a minimum distance of 7.9 inches. Additionally, the de-clicked aperture ring facilitates smooth adjustments, making it advantageous for video recording. The lens is equipped with a built-in hood that effectively blocks stray light to reduce lens flare, and its compact and lightweight design makes it an excellent choice for travel and casual photography.