Thanks Chris, Just went and bought me another digital camera, the Nikon D850. Where does it all end ?

It never does Wilson and good luck with the new Nikon.

Lol, Chris. It's never ending. Apart from the Nikkor 80/400mm zoom, I just bought the Sigma 150/600mm Super Zoom.
It's a good lens, but heavy on the neck, especially when waiting for planes to arrive. Only drawback I've noticed so far is, when the ground's warm, you notice the heat shimmers in the photos, they tend to make the object look out of focus.