A: Autofocus; A1: Af-C Priority Selection; A2: Number Of Focus Points - Nikon D5300 User Manual

a: Autofocus

a1: AF-C Priority Selection

When AF-C is selected for viewfinder photography (0 51), this option controls
whether photographs can be taken whenever the shutter-release button is pressed
(release priority) or only when the camera is in focus (focus priority).
Option
G Release
F Focus

a2: Number of Focus Points

Choose the number of focus points available for manual focus-point selection.
Option
Choose from the 39 focus points shown at right.
# 39 points
Choose from the 11 focus points shown at right. Use
for quick focus-point selection.
A 11 points
184 A Custom Settings: Fine-Tuning Camera Settings
Photos can be taken whenever the shutter-release button is pressed.
Photos can only be taken once the camera has focused.
G button ➜ A Custom Settings menu
Description
G button ➜ A Custom Settings menu
Description