Nikon D780 DSLR Camera (Body Only) - Manual (Page 279)

233 Shooting Settings
• Pressing the BKT button, rotate the sub-command dial to
choose the white balance adjustment.
• The size of the increment can be chosen from 1 (1 step), 2
(2 steps), or 3 (3 steps).
• Each step is equivalent to 5 mired. Higher A values
correspond to increased amounts of amber. Higher B
values correspond to increased amounts of blue ( 0 200).