B: Exposure; B1: Ev Steps For Exposure Cntrl; C: Timers/Ae Lock; C1: Shutter-Release Button Ae-L - Nikon D5300 Reference Manual

b: Exposure

b1: EV Steps for Exposure Cntrl

Select the increments used when making adjustments to
shutter speed, aperture, exposure and flash compensation, and
bracketing.

c: Timers/AE Lock

c1: Shutter-Release Button AE-L

If On is selected, exposure will lock when the shutter-release
button is pressed halfway.

c2: Auto off Timers

This option determines how long the monitor remains on if no operations are
performed during menu display and playback (Playback/menus), while
photographs are displayed in the monitor after shooting (Image review), and during
live view (Live view), and how long the standby timer, viewfinder, and information
display remain on when no operations are performed (Standby timer). Choose
shorter auto-off delays to reduce the drain on the battery.
Option
Auto off timers are set to the following values:
C Short
D Normal
E Long
Choose separate delays for Playback/menus, Image review, Live view, and
F Custom
Standby timer. When settings are complete, press J.
A
Auto off Timers
The monitor and viewfinder will not turn off automatically when the camera is connected to
a computer or printer via USB.
186 A Custom Settings: Fine-Tuning Camera Settings
Playback/menus
20 s
Short
Normal 1 min.
Long 5 min.
G button ➜ A Custom Settings menu
G button ➜ A Custom Settings menu
G button ➜ A Custom Settings menu
Description (all times are approximate)
Image review
4 s
4 s
20 s
Live view Standby timer
5 min. 4 s
10 min. 8 s
20 min. 1 min.