The Tokina AT-X 107 NH is a fish-eye lens that gives the digital photographer an approximate 180° field of view with dramatic curvature of field or “fish-eye” effect. The AT-X 107 NH only differs from the AT-X 107 DX in that the built-in hood as been removed allowing for a wider image area and more coverage on full-frame sensor (FX) cameras.
Water Repellent coating
The front element of the AT-X 107 DX has a newly formulated WR or “Water Repellent” optical coating on the glass. This coating makes marks such as spots left by water or finger-prints much easier to clean than standard multi-coating.