XF-Mount Lens/APS-C Format, 50mm (35mm Equivalent), Aperture Range: f/1.4 to f/16, One ED Element, One HR Element, HD Nano Multi-Layer Coating, STM Stepping AF Motor, Integrated USB Port for Firmware Updates, 9-Blade Diaphragm. Compact and comfortable the AF 33mm f/1.4 XF from Viltrox is a normal-length prime lens designed for FUJIFILM X-mount mirrorless cameras. The versatile normal field of view is suitable for a wide range of subjects from portraiture to reportage and the fast f/1.4 design excels in low-light conditions and for shallow depth of field applications. The optical design incorporates extra-low dispersion and high refractive index elements to suppress a variety of aberrations and distortion and an HD Nano multi-layer coating has also been applied to reduce flare and ghosting for greater contrast in bright and backlit conditions. This updated lens design adds compatibility with the FUJIFILM X-Pro3 camera. Complementing the optics the lens's design also incorporates an STM stepping motor that affords fast near-silent and accurate autofocus performance along with full-time manual focus override. An internal focusing design also contributes to quick performance. Additionally the lens features an integrated micro-USB port for making future firmware updates to the lens.