Oshiro 8mm f/3.5 LD UNC AL Wide Angle Fisheye Lens forNikon 1 J5, J4, J3, J2, S2, S1, V3, V2, V1 and AW1 Compact Mirrorless Digital Cameras 8mm f/3.5 manual fisheye lens compatible with full-frame sensors (produces a full circle) as well as APS-C sensors 10 lens elements in 7 groups, Low dispersion ultra nano crystal multi-coating anti-reflection optical glass Ultra-fast f/3.5 maximum aperture and rounded eight-blade diaphragm for superior depth-of-field view angle AL aspherical lens element for high image quality with improved performance Equivalent to 12mm in the 35mm APS-C format