http://www.nikonchat.com/nikkor-10-5-fisheye/

Nikon Nikkor 10.5 fisheye vs 10-17 mm tokina fisheye?
what is best for a Nikon D40? I want a fisheye lens really
Neither are better. I used the 10.5 mm fisheye on the D40 and it works great if you really need is a fisheye. The Tokina is a zoom lens and also work with a D40. What What do you need? A zoom or a fish-eye lens right?
D90 + AF 10.5mm f/2.8 fisheye