The pop-up flash has been sacrificed in favor of better weather sealing and a larger optical viewfinder with .75 magnification and 100 percent frame coverage. Night photographers should appreciate both of these features more than a built-in flash. There is also a flip lever with a shutter to block light from entering through the viewfinder during long exposures.
The D850 has an articulated rear screen which operates in the same fashion as the D750 screen, except that it is higher resolution and touch-sensitive. The screen adjusts on only one axis and is useful primarily for low and high camera angles with the camera in the horizontal position. Previous Nikon touch screens were usable only in playback mode, but the D850’s touch screen is also active in live-view and menu navigation modes.