Beside giving you a fisheye view for picture taking, the fisheye2 viewfinder can become a supercool lens, too!
All you need to do is to detach the cute little round viewfinder from the fisheye2 camera, and attach it as a ‘fisheye lens’ on another camera, and it’s worked!
Due to the fisheye2 viewfinder is quite small, perhaps this only work well on camera which has a small lens,
for example the Vivitar Wide & Slim. You may need some simple tools like rubber band and tapes for this DIY, or even just simply hold it with one hand, and click the shutter with another.
Focusing and estimating the exposure can be tricky, just follow your feeling and try out your luck :)