Nikon D50 D50 User's Manual - Page 44

Focus Lock, The AF-Assist Illuminator, AF Assist, Advanced Settings, AE-L/AF-L

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Reference-Choosing the Focus Area The AF-Assist Illuminator If the subject is poorly lit, the AF-assist illuminator will light to assist the focus operation when the shutterrelease button is pressed halfway. The AF-assist illuminator is not available in or mode or when Off is selected for Custom Setting 7 (AF Assist). For the AF-assist illuminator to function correctly, the lens must have a focal length of 24-200 mm and the subject must be in range of the illuminator (0.5- 3 m/1´8˝-9´10˝). Lens hoods should be removed. Focus Lock Focus lock can be used to focus on a subject that will not be in one of the five focus areas in the final composition. It can also be used when the autofocus system is unable to focus ( 121). Single or dynamic area AF is recommended when using focus lock ( 89). 1 Position the subject in the center focus area and press the shutter-release button halfway. 2 Check that the in-focus indicator (●) appears in the viewfinder. Focus will lock when the in-focus indicator appears, and remain locked while the shutter-release button is pressed halfway. Focus can also be locked by pressing the AE-L/AF-L button while the shutter-release button is pressed halfway. Focus will remain locked while the AE-L/ AF-L button is pressed, even if you later remove your finger from the shutter-release button. 3 Recompose the photograph and shoot. Do not change the distance between the camera and subject while focus lock is in effect. Taking Multiple Photographs Without Refocusing Focus will remain locked between shots if the shutter-release button is kept pressed halfway. In continuous mode ( 21), focus will remain locked if the AEL/AF-L button is kept pressed between shots. Advanced Settings 34 14: AE-L/AF-L controls the function performed by the AE-L/AF-L button ( 98).

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34
Reference—Choosing the Focus Area
Focus Lock
Focus lock can be used to focus on a subject that will not be in one of the five
focus areas in the final composition.
It can also be used when the autofocus
system is unable to focus (
121).
Single or dynamic area AF is recommended
when using focus lock (
89).
The AF-Assist Illuminator
If the subject is poorly lit, the AF-assist illuminator will
light to assist the focus operation when the shutter-
release button is pressed halfway.
The AF-assist illumi-
nator is not available in
or
mode or when
Off
is
selected for Custom Setting 7 (
AF Assist
).
For the AF-assist illuminator to function correctly, the lens must have a focal
length of 24–200 mm and the subject must be in range of the illuminator (0.5–
3 m/1´8˝–9´10˝).
Lens hoods should be removed.
1
Position the subject in the center focus area and
press the shutter-release button halfway.
2
Check that the in-focus indicator (
●
) appears in
the viewfinder.
Focus will lock when the in-focus
indicator appears, and remain locked while the
shutter-release button is pressed halfway.
Focus
can also be locked by pressing the
AE-L/AF-L
but-
ton while the shutter-release button is pressed
halfway.
Focus will remain locked while the
AE-L/
AF-L
button is pressed, even if you later remove
your finger from the shutter-release button.
3
Recompose the photograph and shoot.
Do not
change the distance between the camera and
subject while focus lock is in effect.
Taking Multiple Photographs Without Refocusing
Focus will remain locked between shots if the shutter-release button is kept
pressed halfway.
In continuous mode (
21), focus will remain locked if the
AE-
L/AF-L
button is kept pressed between shots.
Advanced Settings
14: AE-L/AF-L
controls the function performed by the
AE-L/AF-L
button (
98).