Nikon D780 Reference Manual page 228

A
Frame Advance Rate
The figures for frame advance rate apply in mode S or M at shutter speeds
1
of / s or faster with AF-C selected for autofocus mode and other
250
settings at default values. Frame advance rates may slow:
•
at slow shutter speeds,
•
when [On] is selected for [ISO sensitivity settings] > [Auto ISO
sensitivity control] in the photo shooting menu and ISO sensitivity is
altered automatically by the camera,
•
when ISO sensitivity is set to a value of from Hi 0.3 to Hi 2,
•
if flicker is detected with [Enable] selected for [Flicker reduction] >
[Flicker reduction setting] in the photo shooting menu,
•
at extremely small apertures (high f-numbers),
•
when vibration reduction (available with VR lenses) is on,
•
when the battery is low,
•
with certain lenses, or
•
if a non-CPU lens is attached with [Aperture ring] selected for Custom
Setting f5 [Customize command dials] > [Aperture setting].
182 Shooting Settings