Overall, the 50 fixed focal length makes a good impression. The Abbildungsleidung and particularly liked the bokeh. The small size of the lens, the camera can act bizarre cute.
The nonexistent Quick-Shift and the plastic bayonet not bother me. If you do not have to constantly change lenses and neat deal with his property, is because even break anything.
What me something negative stands out is the volume of Auotfokus. To compare with other well-known manufacturers, high price (purchase price about 270) would be an ultrasonic motor already desirable. Here I would urgently need a penalty. The dimensions like accepted. Also, there is not a WR lens.
Since the lens is already only about 140 will cost a year later, I give a strong buy recommendation here.