Nikon D2HS - Manual (Page 84)

70
Taking Photographs—Focus
Focus
Controlling How the Camera Focuses
This section describes the options that control how your camera focuses:
fo cus mode, focus-area selection, and AF-area mode.
Focus Mode
Focus mode is controlled by the focus mode
se lec tor on the front of the camera. There are
two autofocus (AF) modes, in which the cam era
focuses automatically when the shutter-re
lease
button is pressed halfway, and one manual focus
mode, in which focus must be adjusted man u al ly
using the focusing ring on the lens:
Camera focuses when shutter-release button is pressed half way. Fo cus
locks when in-focus indicator (
●) appears in view fi nd er, and re mains
locked while shutter-release button is pressed halfway (focus lock).
Shut ter can only be re leased when in-fo cus in di ca tor is dis played (fo-
cus pri or i ty). If sub ject was mov ing when shutter-release button was
pressed half way, cam era will track sub ject until fo cus ing is complete
and the shut ter can be re leased (pre dic tive fo cus tracking;
71). If
subject stops mov ing before shutter is released, in-focus in di ca tor will
ap pear in viewfi nder and focus will lock at this dis tance.
S
Sin gle-servo
AF
Description Option
Camera focuses continuously while shutter-release but ton is pressed
halfway. If subject moves, focus will be adjusted to compensate (pre-
dictive fo cus tracking;
71). Pho to graphs can be taken whether or
not camera is in focus (release priority).
C
Con tin u ous-
servo AF
Camera does not focus automatically; focus must be adjusted manu-
ally using the lens focusing ring. If max i mum aperture of lens is f/5.6
or faster, view
fi nd er fo cus in di ca tor can be used to con fi rm focus
(electronic range fi nd ing), but photographs can be taken at any time,
wheth er or not camera is in focus.
M
Man u al
Choosing single-servo AF ensures a sharp, focused image. Continuous-servo
AF may be a better choice with erratically-moving subjects. Man u al fo cus is
rec om mend ed when the cam era is unable to focus using autofocus.