Nikon D80 - Manual (Page 40)

28 Reference: More on Photography (All Modes) / Focus
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Focus
Focus can be adjusted automatically (see “ Autofocus,” below) or manually ( 32). The user
can also select the focus area for automatic or manual focus ( 30) or use focus lock to focus
to recompose photographs after focusing ( 31).
Autofocus Controls used: Focus mode selector
When the focus mode selector is set to AF, the camera focuses au-
tomatically when the shutter-release button is pressed halfway. In
single-area AF, a beep will sound when the camera focuses. No
beep will sound when AF-A is selected in (sports) mode or when
continuous-servo autofocus is used (note that continuous-servo
autofocus may be selected automatically when shooting moving
subjects in AF-A autofocus mode).
If the lens does not support autofocus or the camera is unable to focus using autofocus, use
manual focus ( 32).
A-M Selection/Autofocus with Manual Priority
If the lens is equipped with A-M selection or an M/A-M switch, select A
(autofocus) or M/A (autofocus with manual priority).
The AF-Assist Illuminator
If the subject is poorly lit, the AF-assist illuminator will light automatically to
assist the autofocus operation when the shutter-release button is pressed
halfway. The AF-assist illuminator will not light in
, , or modes or if
Off has been selected for Custom Setting 4 (AF assist; 87). The illumina-
tor has a range of about 0.5–3.0 m (1 ft. 8 in.–9 ft. 10 in.); when using the
illuminator, use a lens with a focal length of 24–200 mm and remove the
lens hood.
1 — Beep ( 86)
This option can be used to turn the beep speaker on or off .
More on Photography (All Modes)
Focus