Hi, so i am new to photography and i recently got a 12mm fisheye wide angle lens to use on my NIKON D70S. That i also got recently. Ok ,so here is my problem the seller did not say in the add that the mount on it was screw on. Actually they did not say at all what kind of mount it was. So i was wondering if any of you more experienced photographer had any idea if there is a special extension that i could use with it? I do get it that every thing will be manual if there is even a way to do it. If not i can return it and pay return shipping and a 20% restocking fee! Grrrrr i really was excited about having my first fisheye wide angel lens they take really neat pictures. Ok thank for your help!