D3: Max. Continuous Release; D4: Exposure Delay Mode; D5: Flash Warning - Nikon D750 User Manual

d3: Max. Continuous Release

The maximum number of shots that can be taken in a single
burst in continuous mode can be set to any value between 1 and
100. Note that this setting has no effect at shutter speeds of 4 s
or slower.
A The Memory Buffer
Regardless of the option selected for Custom Setting d3, shooting will
slow when the memory buffer fills (tAA). See page 492 for more
information on the capacity of the memory buffer.

d4: Exposure Delay Mode

In situations where the slightest camera movement can blur
pictures, select 1 s, 2 s, or 3 s to delay shutter release until one,
two, or three seconds after the mirror is raised.

d5: Flash Warning

If On is selected, the flash-ready indicator (c) will flash in the
viewfinder if the flash is required to ensure optimal exposure.
G button ➜ A Custom Settings menu
G button ➜ A Custom Settings menu
G button ➜ A Custom Settings menu
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