Even without 81

The fisheye lens is fun to use, it's still an amateur amateur material prices. It is consistent and predictable. I put on my optical 67mm diameter, the adapter ring is provided, it generates a large reduction of this diameter with possible vignetting. Please note that the lens significantly extends the length of the lens, and with the flash, you can clearly see his shadow, not very pretty. Lens caps take the wrong, the case is poor.
In short, no good surprise or bad.