Nikon D7200 body - Manual (Page 148)

124
Live View (Spot White Balance)
During live view, white balance can be measured directly from
any white or gray object in the frame.
1
Press the a button.
The mirror will be raised and the view
through the lens will be displayed in
the camera monitor.
2
Set white balance to L (Preset manual).
Press the L (U) button and rotate the main command dial
until L is displayed in the monitor.
L (U) button Main command
dial
Monitor
a button