Folks, I was wondering if anyone knows which 1.4X or 1.6X tele-converters work with the following lenses: 80-200 f/2.8D AF-S 400mm f/5.6 ED-IF 600mm f/5.6 ED-IF I will be using an F5. I know I will lose AF with the longer lenses, due to low light levels, but that's OK. Thanks, as always. Colin
