Nikon D750 DSLR Camera (Body Only) - Manual (Page 364)

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Use this option to fine-tune the exposure value selected by the
camera. Exposure can be fine-tuned separately for each
metering method by from +1 to –1 EV in steps of
1 /
6
EV.
If On is selected, exposure will lock when the shutter-release
button is pressed halfway.
Choose how long the camera continues to meter exposure
when no operations are performed. The shutter-speed and
aperture displays in the control panel and viewfinder turn off
automatically when the standby timer expires.
Choose a shorter standby timer delay for longer battery life.
b6: Fine-tune Optimal Exposure
G button
➜
A Custom Settings menu
D
Fine-Tuning Exposure
Exposure fine-tuning is not affected by two-button resets. Note that as
the exposure compensation (
E ) icon is not displayed, the only way to
determine how much exposure has been altered is to view the amount
in the fine-tuning menu. Exposure compensation (
0 143) is preferred
in most situations.
c: Timers/AE Lock
c1: Shutter-Release Button AE-L
G button
➜
A Custom Settings menu
c2: Standby timer
G button
➜
A Custom Settings menu