Flicker Reduction; Slot Empty Release Lock; Video Mode - Nikon D5500 Reference Manual

Flicker Reduction

Reduce flicker and banding when shooting under fluorescent or
mercury-vapor lighting during live view (0 162) or movie
recording (0 174). Choose Auto to allow the camera to
automatically choose the correct frequency, or manually match
the frequency to that of the local AC power supply.
A
Flicker Reduction
If Auto fails to produce the desired results and you are unsure as to the
frequency of the local power supply, test both the 50 and 60 Hz
options and choose the one that produces the best results. Flicker
reduction may not produce the desired results if the subject is very
bright, in which case you should select mode A or M and choose a
smaller aperture (higher f-number) before starting live view. Note that
flicker reduction is not available when On is selected for Movie
settings > Manual movie settings (0 179) in mode M.

Slot Empty Release Lock

Selecting Enable release allows the shutter to be released when
no memory card is inserted, although no pictures will be
recorded (they will however be displayed in the monitor in
demo mode). If Release locked is selected, the shutter-release
button is only enabled when a memory card is inserted in the
camera.

Video Mode

When connecting the camera to a television or VCR, be sure the
camera video mode matches the device video standard (NTSC or
PAL).
G button ➜ B setup menu
G button ➜ B setup menu
G button ➜ B setup menu
B The Setup Menu: Camera Setup
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