Rare Fisheye-Nikkor 8mm f/2.8 lens.
Used 8mm Fisheye. Still works with my D800. The lens has a built in filter turret. The included filters are an L1a (clear), Y48 yellow, Y52 yellow, 056 orange and R60 red.
The lens is in very nice condition. No scratches, mold or oil on the blades. There are some minor dust motes inside (as always), but nothing that would degrade an image. PLease check photos.