Nikon D7200 body - Manual (Page 324)

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3
Select the second image.
The selected image will appear as Image 1. Highlight
Image 2 and press
J, then select the second photo as
described in Step 2.
4
Adjust gain.
Highlight Image 1 or Image 2 and
optimize exposure for the overlay by
pressing
1 or 3 to select gain from
values between 0.1 and 2.0. Repeat
for the second image. The default
value is 1.0; select 0.5 to halve gain or
2.0 to double it. The effects are visible in the Preview
column.
5
Preview the overlay.
To preview the composition as shown
at right, press
4 or 2 to place the
cursor in the Preview column, then
press
1 or 3 to highlight Overlay
and press J (note that colors and
brightness in the preview may differ
from the final image). To save the overlay without displaying
a preview, select Save. To return to Step 4 and select new
photos or adjust gain, press
W (S).
6
Save the overlay.
Press
J while the preview is
displayed to save the overlay. After an
overlay is created, the resulting image
will be displayed full-frame in the
monitor.