More useful info about "reach"
& different ways to achieve it - thank you Les
Well, yes it's more affordable.
I would probably spend $7,000 differently though
If you compare the portability, weight & size of a D500 plus equivalent lens, it would probably cost less and be more portable out in the field than this 800mm and a Z8.
Of course, i appreciate that this thread has morphed into a discussion on whether Nikon has given us better options nowadays, compared to those from design decisions made decades ago.
Personally I'd be happy with a "Z" equivalent of a D500
Nikon was in a very difficult economic situation a few years ago and the Z-System was late, so we profit now from a very cheap 800/6,3 lens and dont forget the Z9 was offered 1000 Euro cheaper than the D6.
I was a heavy D500 user and frequently preferred it over the D850 (switched to DX mode when needed with a unique viefwinder surround visibility not available in the D6). One of the advantages of the D500 was the larger area of the image that was covered by the AF sensor as well. With the Z-System the situation has changed a bit. I can use Z9 and Z8 in FX/DX switch mode (the viewfinder adapts automatically which has pros and cons) and I am not sure whether I would buy a Z500 since its advantages are more limited. For me it would depend whether it is smaller and more ligthweight than the Z8 but share its control-layout and funcionality (like the ability to set EV values in full stops). A control layout like the Z6/7 series is a reason for exclusion (like it was the case with the Z6III).
i appreciate the discussion as well but I am coming back that an adapter like described would be good for us and Nikons image, would most likely never happen (especially when Nikon is facing losses again and the market is shrinking) but this is not arguable on a pure rational level.