Nikon D810 User Manual page 192

5
Copy white balance.
Press J to copy the white balance value for the highlighted
photograph to the selected preset. If the highlighted
photograph has a comment (0 375), the comment will be
copied to the comment for the selected preset.
A
Choosing a Source Image
To view the image highlighted in Step 4 full frame, press and hold the
X button.
To view images in other locations, press W. The dialog shown below
will be displayed; select the desired card and folder.
168
X button
W button