A 30mm f/1.4 prime with stepping AF and weather sealing weighs just 285g, delivering consistent edge-to-edge sharpness on APS-C mirrorless bodies. Its 9-blade diaphragm produces smooth bokeh, while the dual aspherical and ED elements keep chromatic aberration minimal even wide open. Best for portrait and street photographers who prioritize a fast aperture in a compact, weather-resistant package.