I really like the Loxia 50mm f:2.0 very much indeed. It suits my A7R to a T. Construction quality is excellent, haptics are great, with the auto-magnification feature when you focus. IQ is very good indeed. Colours and contrast are world-class. Lots of detail. Some loss of sharpness wide open, as in all lenses. I wish it were a tad more flare-resistant, and bokeh can be busy if you have light-sources in the frame. So it is not an Otus-killer, but then, for the money, what is? I was quite happy to sell my FE 55 and keep the Loxia.