It should be noted that this pipe is identical to Walimex Fisheye II. That is, the removable hood and the detection by the camera, so read the lens data and aperture values are included.
Thus, the panel can also be set by the camera! Specifically, this means that only the focusing is left to the user. Of course you can with Aperture Priority or Shutter Priority shooting.
The projection of this lens is also very nice. Not like cheap fisheye cameras all upset at the edge, but nice and even. Who can do without the autofocus (which is recommended with a fisheye anyway ...) is served here at a good price !. I tested with Nikon D80 and D60.