It's not the only 23mm lens available from Fujifilm. The XF 23mm F2 is smaller, weather sealed, and sells for about half the price. But it also gathers just half the light, and doesn't offer as pleasant a manual focus experience.
Crisp optics; Bright maximum aperture; Quick autofocus; Pleasant manual focus experience; Aperture control ring
Omits stabilization; Not weather sealed; Pricey