Nikon D750 User Manual page 172

At values other than ±0.0, the 0 at the
center of the exposure indicators will
flash (modes P, S, A, h, and %) and a
E icon will be displayed in the control
panel and viewfinder after you release
the E button. The current value for
exposure compensation can be confirmed in the exposure
indicator by pressing the E button.
Normal exposure can be restored by setting exposure
compensation to ±0 (adjustments to exposure compensation in
h and % modes will be reset when another mode is
selected). Exposure compensation is not reset when the camera
is turned off.
Mode M
A
In mode M, exposure compensation affects only the exposure
indicator; shutter speed and aperture do not change.
See Also
A
For information on choosing the size of the increments available for
exposure compensation, see Custom Setting b2 (EV steps for
exposure cntrl, 0 333). For information on making adjustments to
exposure compensation without pressing the E button, see Custom
Setting b3 (Easy exposure compensation, 0 334). For information
on restricting the effects of exposure compensation to the background
when using a flash for foreground lighting, see Custom Setting e4
(Exposure comp. for flash, 0 353). For information on automatically
varying exposure, flash level, white balance, or Active D-Lighting, see
page 202.
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