Nothing expected but still disappointed

I have tested on my A58 (APS-C with 20 MP) on the adapter Sony 18-55mm and 55-200mm kit lenses (SAM II).
If 18mm is seen (tozt crop factor) the complete circle in the image and even the visible light incident on the inner walls of the adapter have their charm.
For the price I did not expect much, but the paper itself is not suitable as a "fun lens".
Even right in the middle (no matter how focused) is getting nowhere near the focus.
Already very well at the center start with the (so desired when Fisheye) strong distortions with blur and unattractive color shifts to go hand in hand.
When the threads, it is sometimes a bit tricky to find the beginning, but this one has been found, it can be screwed clean and without damaging the lens thread. Because I have experienced worse even with expensive filters.
It should be mentioned only positive that these side effects (but also for the fisheye effect) significantly weaker occur in the macro range. But here you have more fun, ways and better results essays with the Polaroid Optics macro lenses available here at Amazon for 20 EUR!
Oh: The included storage bag is not bad. Unfortunately, when retrieving the adapter often remains the female cap hanging in the bag.
For 20 EUR I might keep the essay (and again annoyed me every time he made a cool photo eigentlicht useless), but for 50 EUR true performance is not easy.
The thing went back directly to Amazon after an afternoon testing.