Nikon Z9 Mirrorless Camera - Manual (Page 140)

140 Exposure
D Long Time-Exposures
• Note that “noise” (bright spots, randomly-spaced bright pixels or fog) may
be present in long exposures.
• Bright spots and fog can be reduced by choosing [ ON ] for [ Long exposure
NR ] in the photo shooting menu.
• Nikon recommends using a fully-charged battery, the supplied charging
AC adapter, or an optional AC adapter and power connector to prevent
loss of power during long exposures.
• To prevent blur, use of a tripod or a device such as an optional remote cord
or wireless remote controller is recommended.