ZEIKOS on a Nikon D90.
I received two zeikos lenses for christmas, but they don't fit the size of my D90 body.
Is there a piece I need to connect the two? Also, if it needs attach onto the end of another lens, my current is a 18-105mm. Any help would be appreciated. If you could as well, please provide a link if there is indeed a way to use this lens with my current equipment.