Opteka 500mm f/8 High Definition Telephoto Mirror Lens for Olympus EVOLT E-5, E-520, E-510, E-500, E-450, E-420, E-410, E-400, E-330 and E-300 Digital SLR Cameras High definition optics produce sharper, more intense pictures Incredibly compact and lightweight, Fully Multi-coated, Manual Focus Soft pouch and three (3) rear mounted, 30.5mm filters, (ND-2X, ND-4X & Skylight) May be combined with the Opteka 2X Multiplier for 1000mm Zoom (Sold separately - 47st Photo Item Code: B000JSZ41S) 10 Year Warranty