Nikon N1538 Reference Manual page 139

• To choose the number of intervals:
Highlight Number of times
and press 2.
• To enable or disable exposure smoothing:
Highlight Exposure
smoothing and press 2.
Selecting On allows the camera to adjust exposure to match
previous shot in modes other than M (note that exposure
smoothing only takes effect in mode M if auto ISO sensitivity
control is on).
Choose the number of intervals
and press J.
Highlight an option and
press J.
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