Fast, compact and high-quality feeling interchangeable lens for Fujifilm X mount. The NOKTON 23mm F1.2 Aspherical X mount is an interchangeable lens for the Fujifilm X mount. It is a semi-wide-angle lens that covers an APS-C size image circle, and has an angle of view similar to 35mm in full-frame equivalent. The optical design is optimized for the image sensor of the Fujifilm X system cameras. This lens is equipped with electronic contacts and information for reliable communications between the lens and body. Using these bodies which support communications, the lens achieves “Exif information”, “Focus check”, and “Shooting distance interlocking display.” Certain models also support “In-body image stabilization” and “Parallax correction” functions. The lens configuration uses the latest optical design which utilizes one double-sided aspherical element and two anomalous partially dispersed glass. While achieving a large aperture of F1.2, it has excellent rendering with fine resolution at all apertures. Despite being a fast lens, it has a small diameter of φ46 mm, a total length of 43.8 mm, and a weight of 214 g, making it very portable. The minimum focus distance is 0.18m (shooting magnification 1:4.9). The lens includes a compact, screw in hood that reduces vignetting of the shooting frame.