Can anyone assist with information about an adaptor that would allow me to fit a Nikkor AF-S 14-24mm f/2.8 G ED lens to a Canon 5D II body whilst still retaining full communication between the two?

Reviews I've read from several sources suggest that this lens is amazing wde open throughout its whole focal range.

I was interested in the Sigma 12-24mm/ II but have read too many reviews that pan it for its soft focus.