The Lensbaby 5.8mm f/3.5 Circular Fisheye Lens for Nikon F is a specialized, fully manual creative lens designed to produce a complete circle within your camera frame. Unlike most of Lensbaby's signature lenses, this model does not bend or tilt, meaning the distorted fisheye circle remains perfectly centered in your shot !! READ !! NEEDS TO BE TUNED FOR A PROPER FOCUSING DISTANCE. NOW ITFOCUSES ON MACRO DISTANCE ONLY With adapters this lens can be used all Nikons including DX and on Micro Four Thirds also still giving round FISH EYE CIRCLE