sry... this may sound crazy to some of you, if you remember what i posted until now.(But, ASB being honest is what will take us further... and i dont see my recent postings corrupted by the following.)
If i had to decide, if i would take a Nikon D810 or a Pentax K-1... (actually I am in doubt if DxO has the integrety people think it has.)
Man... i tell you, i would still take the K-1 even if AF-area may be smaller and not as dense as on Nikons.
And i tell you why. I already had the chance to put the K-1 to the test against a Nikon D850...
It did the trick
nearly as good as the Nikon D850 ... both had mounted a 24-70 2.8
And despite the fact, that the D850 has the same AF-sensing as the D500/D5 ... its AF seems to perform nearly nowhere the D5/D500...
that may be due to the fact that there is so much data( running through the system whilst it would also have to process AF (sensing AF and EV for every shot)algorithms.
alas, both cameras performed not so good when it came to tracking movement on the Z-axis...(towards and away from the sensor -frontally)
I had set the Nikon D850 to "Dynamic Area"-Mode and the Pentax K-1 to SEL-S(or was it M?
...)
both set on AF-C resp. AF.C
Anyway, the only camera that really is good at that seems to be the Sony A9....
bottomline... if you own Pentax glass: keep it and stop thinkin about Nikon D850, or try it and realize that you will rather buy a used K-1 extra as a backup camera before you jump ship
Only case that it may be wise to jump ship (to D850) is, if you really feel in need for faster bursts with longer shooting in a row..-bigger buffer
and just because someone said, he wouldnt know what the fun-factor is. pls tell it to the marines... since i have written "xxx, xxx, good video - fun factor" u should know, that i meant having good video on board of a DSLR that costs more than 1000 bucks is maybe not needed but it makes fun because if you do video with it, you can really show off the material. Instead of asking yourself why fast moving cars rather seem to jump their way through the frame instead of driving...
(smooth movement is only achieved at a good framerate)