The Viltrox AF 23mm f1.4 STM Lens for Fujifilm is a dedicated lens for APS-C crop sensor cameras. Specifically this lens is suitable for all Fujifilm X mount cameras (Except for the X-Pro3*). Auto-focus lens offering 23mm (35mm equivalent 35mm focal length) coverage. A street photographers dream! All metal exterior houses 11 element in 9 groups including superior ED and HR elements. A fast f1.4 aperture for great low light performance and a nice de-focused "bokeh" background opportunities. Also features a clickless aperture. Additionally an integrated STM motor ensures smooth and fast focusing in virtually all instances. Compact and lightweight, just 270g makes this a superb regular use lens. Built-in usb connection for software updates.