Lens for D600
Thanks everyone for your input. Strange I didn't know that 28-300 can't handle a tele convt. Thansk for that info.
If you try to physically attach a Nikon teleconverter to the zoom lens, you can easily see how the lens elements would smack into and damage each other and how they don't physically fit.
I don't have the 28-300 to try this with but I do know that the 70-300VR does attach successfully to a Kenko 1.4 TC. The only issue in the past has been that you're putting TC on a lens that's 5.6 max at the long end which past Nikon consumer AF systems couldn't handle. (It failed miserably on the D700 & D300.) The D600 supposedly can but I can't say I've tried that out yet. Should be an interesting experiment.