Nikon D500 User Manual page 377

Flicker or banding appears during movie recording: Choose an option for Flicker
reduction that matches the frequency of the local AC power supply
(0 290).
Bright regions or bands appear in live view: A flashing sign, flash, or other light
source with brief duration was used during live view.
Smudges appear in photographs: Clean front and rear lens elements. If
problem persists, perform image sensor cleaning (0 336).
Live view ends unexpectedly or does not start: Live view may end automatically
to prevent damage to the camera's internal circuits if:
• The ambient temperature is high
• The camera has been used for extended periods in live view or to
record movies
• The camera has been used in continuous release modes for extended
periods
If live view does not start when you press the a button, wait for the
internal circuits to cool and then try again. Note that the camera may
feel warm to the touch, but this does not indicate a malfunction.
Image artifacts appear during live view: "Noise" (randomly-spaced bright
pixels, fog, or lines) and unexpected colors may appear if you zoom in on
the view through the lens (0 46) during live view; in movies, the amount
and distribution of randomly-spaced bright pixels, fog, and bright spots
are affected by frame size and rate (0 68). Randomly-spaced bright
pixels, fog, or bright spots may also arise as a result of increases in the
temperature of the camera's internal circuits during live view; exit live
view when the camera is not in use.
Can not measure white balance: Subject is too dark or too bright (0 170).
Image can not be selected as source for preset white balance: Image was not
created with D500 (0 177).
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