I also think it's not bad that the lens is made of plastic. Although metal-quality but it is possible severe. I want to shoot low and not inherit the lens to the grandson.
The image quality is perfect, because the software of the NEX pretty hefty tons distortion (lines would be curved without this correction) corrected properly. Of course you could also use more expensive lenses. But the NEX-Software makes it free and above all automatically. Only if you shoot RAW, an appropriate equalization even in RAW converter has to be set. Vignetting (vignetting) and chromatic aberrations - particularly at thin objects such as tree branches seen in backlight - are pleasingly low. Those who want more image quality, must stop access to a Zeiss fixed focal length (and this also pay correspondingly expensive). But honestly, who scrutinizes his photos later through a magnifying glass. They are good memories and not intended for a photo agency that pays attention to every detail.
The lens can also shoot very well. It produces no noise in the internal NEX-microphone (except for the NEX 7 can be no external micro-connect) and introduces the NEX quickly and without "pumping" sharp. So as with the camcorder. Here Sony has the SEL-P1650 even donated a so-called Power Zoom. Via a rocker on the side of the lens zooms engine while I push this a very uniform or out. So even you can do that only with difficulty, so that the films then act unprofessionally by hand.
I think the price is absolutely ok, because I get a lens with a lot of practical value here.