This is an very good, and very easy to find, more importantly, it’s an very very cheap lens.
This lens it’s very interesting lens. The first time I heard about this lens it was about more than a years ago from an old friend. I don’t know how he knew this lens before most of the people, might be because he was born at the Fujian, which the place that Lens been designed and made. 😀 (I don’t think this is the real reason.) He told me some characters about this lens, and showed me some photos he took with he Sony Nex camera, it got my attention straight away.