Nikon D3400 - Side-By-Side Comparison

249N The Retouch Menu: Creating Retouched Copies
Compare retouched copies to the original photographs. This
option is only available if the retouch menu is displayed by
pressing the P button and selecting Retouch when a copy or
original is played back full frame.
1 Select a picture.
Select a retouched copy (shown by a
Z icon) or a photograph that has
been retouched in full-frame
playback. Press P, then highlight
Retouch and press 2.
2 Select Side-by-side comparison.
Highlight Side-by-side comparison
in the retouch menu and press J.
Side-by-side Comparison
P button