The best digital camera in my experience
The internet is full of detailed reviews of the D850. It is, therefor, only necessary to mention a few strong points. These include ease of use, focus accuracy and image quality.
If you have previous experience with a similar Nikon DSLR, there won´t be much of a learning curve. Even if not, the controls are conveniently placed and the menu system is well designed. The touch screen allows quick menu item selection.
Focus accuracy is improved compared to, say, the D800. I have a higher percentage of action shot ´´keepers´´. The new user is advised, however, to read the manual or a second sourced guide for details of operation.
Image quality is excellent. Short of investing in a medium format system, it is probably the best available. In my case, the technical quality of 17 inch wide prints made from the D850 equals or exceeds that of 4000 dpi scans of 645 and 6 by 7 film.
In summary, the D850 satisfies my photographic needs. It´s a fine tool for almost any serious photographer.