or rack focusing with parfocal lenses, which are rare). Someone at Nikon decided to take a stand and give the masses what they wanted, and the D850 is one of the few DSLRs to offer focus peaking ...
The D850 still relies on contrast-detect AF in Live View mode, though, so AF speed will vary a lot depending on the lens being used, and that is why we typically don't measure Live View full AF ...
The Nikon D850 is one of the best cameras for pros and serious enthusiasts, but sadly it was the last of its breed. But Nikon has some good news for anyone mourning the demise of the D850 ...