I'm off to Africa next month for a photo safari. I recently bought a Canon 200 to 400 f4. I have a Canon 400mm F2.8L IS (not version II) and a Canon 600mm F4L IS (not version II) which I'd like to see go to good homes. I am open to offers on both. They are both manufactured in July 2010 and are essentially new. I would rate them 9/10 (few minor scuffs on the lens hood collars). Optics are 10/10 on both lenses. These lenses are fantastic. They are professional super telephotos and come with original cases, lens hoods, covers and cases with keys. Photos with these lenses are amazing. The only con is that they are heavy. Cannot be hand held unless you are Charles Atlas. PM me if you want some more info. Ultimate sports, bird and wildlife lenses. Some sample shots.