Got my Kipon adapter today and put on my 50/2 macro. Wow. Stunningly sharp across the field and the bokeh just melts away. I dare say that it is better than my 50/1.8 Canon LTM that is supposed to be as good as the rigid Summicron. The macro makes my setup pretty big as it's the biggest 50mm lens I've ever seen, but the weight actually works out in lowlight settings as it reduces shake.