You can't put this lens on full frame, it won't fit. Not without physical modification. It has an extended rubber ring that would contact the mirror of a FF camera.
I have a Tokina 11-18mm that works great on FF, and 1.3X crop. Third party crop lenses mount fie on FF cameras.
Here is my Tokina at 11mm of a 5DIII (no hood):REX50031
, on Flickr
By 14mm you get 100% cover on FF. On 1.3 crop you get 100% at 11mm, but must remove the hood.