A bright and lightweight wide-angle prime in a durable metal body, the AF 17mm f/1.8 Air Lens from TTArtisan offers a 25.5mm full-frame equivalent focal length that's perfect for capturing street scenes, landscapes, architecture, and more. Smooth, quiet internal autofocusing is provided by the lens's STM motor. Its f/1.8 maximum aperture provides powerful low-light performance and creates rich bokeh, ensuring your subject stands out in any scene.