What kind of adapter do i need for a nikon 10.5 to fit on my canon 7d?

I'm getting a nikon 10.5 but i know there's a special adapter i need for me to be able to change aperture. And with the crop ratio of the 1.3x lens, how less of distortion/wideness am i losing going to 1.6x?

Http://www.360rage.com/panorama-forum/cameras-and-lenses-f4/nikon-5mm-fisheye-eos-350d-samples-and-review-t12.html

Novoflex makes the best adapter for this purpose: http://www.bhphotovideo.com/...apter.html

It is not the cheapest, but the cheaper adapters tend to get stuck on the back of lenses and fit somewhat loosely. There's very little play on this adapter and it is very easy to remove.

I use this adapter to use BOTH ai and non-ai lenses on my 7d. It works great. You can't even use non-ai lenses on newer nikon cameras, which is why even excellent non-ai lenses can be very cheap.

You will not be able to autofocus with any of these adapters however.