Olympus’s flagship is in trouble. Reports show that at ISOÂ 12,800 the NEX 5N thrashes the EP-3 and moves ahead of even the 5D Mk II, Nikon D7000 and Panasonic GH2 for low light image quality. In fact it out performs every sub $2000 camera on the market. Of other video capable DSLRs only the Canon 1D Mk IV, Nikon D3S, D700 are better at high ISOs. The excellent French site…