The bokeh is actually rather good and much better than might be expected of a 20mm lens. Flare is not an issue and even against the light images maintain contrast levels. Another excellent ...
Sharpness is highly impressive. The centre is excellent from f/1.8 to f/2, outstanding from f/2.8 to f/8 and excellent at f/11 and f/16. The edges are excellent from f/1.8 to f/4, outstanding at f ...