The Samyang 12mm f2.8 Fisheye for Nikon DSLRs is a manual focus fish-eye lens. It creates a 180° rectangular image with Full Frame sensors (view measured corner-to-corner), and if used with smaller sensors a reduced curvilinear wide angle image. Two aspherical and three extra low dispersion lens elements, together with Ultra Multi Coating minimise chromatic aberrations and flare, and it focuses as close as 20cm. A petal shaped lens hood is included to give maximum shading for the extreme angle of view. The Nikon mount version features electronic coupling to transmit exposure information to the camera.