Opteka 9mm f/8 HDMC Fisheye Lens for Olympus PEN E-PL7, E-P5, E-PL5, E-PM2, E-P1, E-P2, E-PL1, E-PL1s, E-PL2 and other Micro Four Thirds Mirrorless Digital Cameras Twelve-layer HDMC multi-coating reduces lens flare and ghosting for contrast-rich, color-neutral imagery Prime fisheye lens with a fixed f/8 aperture is designed for APS-C-sized Olympus Micro Four Thirds 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