An updated EF 800mm f/5. 6L IS is a lens I figured we would have seen already, but here we are still waiting for an update. For the moment, owning an EF 600mm f/4L IS II and a 1. 4 teleconverter outperforms the EF 800mm f/5.
6L IS in most of the important ways. It looks like Canon Read more. . . . canonrumors.com