M.Zuiko 150-400mm F4.5 TC1.25X IS PRO
Simply put, the best wildlife lens on the market, hands down! The close focus at 4.26′ combined with an amazingly fast autofocus, lightweight, and super sharp images makes this zoom at 35mm equivalent a 300mm to 800mm constant F4.5 aperture lens! Flip the built-in teleconverter switch and you are shooting at 1000mm F.5.6 and I have handheld this lens at 1/4″ second for a tack sharp image of a perched bird! No other camera system has a lens that comes close to this lens! Take a look at the image of the fly below, you would swear that was taken with a macro lens!