The Viltrox AF 28mm F4.5 is an ultra-compact wide prime lens for Fujifilm X-mount APS-C mirrorless cameras, designed as a pancake-style lens for maximum portability and everyday carry. It features autofocus and supports firmware updates via USB. Part of Viltrox's compact pancake prime lens series designed for discreet, minimalist shooting on Fujifilm X-mount cameras.