Nikon D750 DSLR Camera (Body Only) - Manual (Page 270)

242
A
Rotate Tall
To display “tall” (portrait-orientation)
photographs in tall orientation, select
On for
the Rotate tall option in the playback menu
( 0 308).
A Image Review
When On is selected for Image review in the playback menu ( 0 307),
photographs are automatically displayed in the monitor after shooting
(because the camera is already in the correct orientation, images are
not rotated automatically during image review). In continuous release
modes, display begins when shooting ends, with the first photograph
in the current series displayed.