Nikon D780 DSLR Camera (Body Only) - Manual (Page 775)

729 Menu Guide > N The Retouch Menu
Rotate pictures by up to ±5° in
increments of approximately 0.25°.
• The effect can be previewed in the edit
display.
• The greater the rotation, the more will
be trimmed from the edges.
• Press 4 or 2 to choose the amount of straightening
performed.
• Press J to save the retouched copy.
Straighten
G button
U N retouch menu