I bought the fisheye converter for my Nex5 with 16mm and have to say that the effects you achieve with it are quite interesting. Clear the quality is not as good as when you buy a real fisheye for 500 euros. But for pure amateurs, it is ok. It looks natural at the edge blurring that's not surprising given Fisheyes in this price range though. It is nice that you so virtually 360 degree panoramas hinbekommt, together with the Pano function of Nex. Like the WW converter may be applied to the 16mm pancake this Fisheye Converter very easy. Simply push (look for the red bars) turn, and it locks into place. When you have to arrange a press slide button and turn the converter in the other direction. All this is fairly quick and easy. The converter comes with cover for back and front, front a lens hood is attached, you can not lose weight (I'm assuming I have not tried it with violence). This is something disadvantageous because as the compactness of the Nex lost something. However, since the attachment is really fast, it's no problem to take Converter removed and attach them easily whenever required. The same is true for the WW-converter ECU1 (see my review here).
