With an 11mm (35mm full-frame equivalent: 16.5mm) focal length for dynamic ultra-wide images and a large F1.8 max. aperture for deep bokeh, this lens weighs just 6.4 oz. (181 g). It is a perfect match for compact APS-C cameras, letting you capture stunning stills and movies anywhere. It also features two linear motors for fast, precise AF that supports both stills and movies.