APS-C | f/1.7 to f/16 37.5 mm (full-frame equivalent) Fast and lightweight wide-angle Spindle-type STM autofocus motor 1 ED lens element, 2 ASPH, and 2 HR HD nano multi-coating Minimum focusing distance of 11.8" Supports Exif data transmission Capture everyday scenes from a wide perspective with the portable Viltrox AF 25 mm f/1.7 Air E lens for Sony cameras with E-mount. With a full-frame equivalence of 37.5 mm, this prime lens is ideal for various subjects, such as street scenes, nature, and still lifes. Its autofocus is controlled by a fast and silent STM screw-driven motor. Its bright maximum aperture of f/1.7, along with its 9 blades, allows work in low-light environments and creates spectacular bokeh that highlights the subject. Optical aberration and image distortion are reduced thanks to the incorporated extra-low dispersion (ED), high refractive (HR), and aspherical (ASPH) lens elements. Reliable Autofocus for Photography and Video The AF 25 mm f/1.7 Air E lens effectively reduces focus breathing, which greatly benefits video applications by allowing smoother focus transitions. Eye and face detection is supported with compatible camera systems for better focus accuracy. Design Features Ultra-bright maximum aperture of f/1.7 for working in low-light conditions. Twelve elements in ten groups, including one ED lens, two HR lenses, and two aspherical lenses, to reduce flares and ghosting and enhance contrast. Supports electronic aperture control Internal focus design Minimum focus distance of 29.97 cm for working moderately close to subjects Extremely compact, weighs less than 198 grams Supports Exif data transmission and firmware updates via USB-C Lens hood in a lotus shape for increased protection against impacts and lens flares.