Opteka 12mm f/7.4 HDMC Fisheye Lens for Sony NEX E-Mount a6000, a5100, a5000, a3000, NEX-7, NEX-6, NEX-5T, NEX-5N, NEX-5R and NEX-3N Digital Mirrorless Cameras Twelve-layer HDMC multi-coating reduces lens flare and ghosting for contrast-rich, color-neutral imagery Prime fisheye lens with a fixed f/7.4 aperture is designed for APS-C-sized Sony E-mount mirrorless digital cameras, where it provides a 35mm-equivalent focal length of 18mm All-glass optical construction housed within an aluminum alloy lens barrel featuring a built-in petal type lens hood Expansive 167 degree diagonal angle of view helps to render unique perspectives and emphasize close-up subject matter Made in Japan, 3 year warranty