The lens I have at the NEX6 since October 2012. The quality is good, the focus reasonably fast. The manual focusing is difficult because of the distance ring revolve and one relatively often just want to set "infinite". This is not as easy as with "stop". I would like to mention that the focus in the dim light with autofocus adjusts quite inaccurate. At first I thought to shake, I noticed that manually set, even in a dimly lit church quite sharp images are possible (very good image stabilization). The sharpness of the picture is in my opinion at the long end (210mm) is not particularly. Shortly before this focal length the picture appears much sharper, so as in the rest area. The version is in my opinion, made of plastic, which is coated with a thin aluminum sheet. The terminal is made of metal. The rings run even after prolonged use backlash-free and very good. Films is very good without disturbing noises.
