I was very excited to see how the thing is ... I think I got a defective part, because for me the focus just looks bad and useless from. What bothers me is the chromatic aberration. Clear that it can emerge with such a light intensity, but in this case it is just everywhere and is already with the naked eye (without having to zoom in) visible. Here some examples:
In my case, the chromatic aberration is visible even with f 5.6, what the meaning and purpose of the light intensity a little neglected ...
