Nikon D5100 Guide D’Exploitation
158
L
When AF-C is selected for viewfinder photography (
0 39), 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).
(release priority) or only when the camera is in focus (focus priority).
Choose whether the built-in AF-assist illuminator lights to assist
the focus operation when lighting is poor.
the focus operation when lighting is poor.
a: Autofocus
a1: AF-C Priority Selection
G button
➜ A Custom Settings menu
Option
Description
G Release
Photos can be taken whenever the shutter-release button is pressed.
F Focus
Photos can only be taken once the camera has focused.
a2: Built-in AF-assist Illuminator
G button
➜ A Custom Settings menu
Option
Description
On
The AF-assist illuminator lights when lighting is poor. AF-assist illumination is only
available when both of the following conditions are met:
1. AF-S is selected for focus mode (
available when both of the following conditions are met:
1. AF-S is selected for focus mode (
0 39) or single-servo autofocus is selected
when the viewfinder is used in AF-A mode.
2.
e (Auto-area AF) is chosen for AF-area mode (0 42), or an option other than
e is chosen and the center focus point is selected.
e is chosen and the center focus point is selected.
Off
The AF-assist illuminator does not light to assist the focus operation. The camera
may not be able to focus using autofocus when lighting is poor.
may not be able to focus using autofocus when lighting is poor.
A
See Also
See page 41 for information on using the AF-assist illuminator. Information on the shooting
modes in which AF-assist is available may be found on page 216. See page 201 for
restrictions on the lenses that can be used with AF assist.
modes in which AF-assist is available may be found on page 216. See page 201 for
restrictions on the lenses that can be used with AF assist.