Nikon Df - Manual (Page 314)

294
U
Copy photographs in Black-and-white,
Sepia, or Cyanotype (blue and white
monochrome).
Selecting Sepia or Cyanotype
displays a preview of the selected
image; press 1 to increase color
saturation, 3 to decrease. Press J
to create a monochrome copy.
Monochrome
G
button ➜ N retouch menu
Increase
saturation
Decrease
saturation