Nikon D2HS - Manual (Page 191)

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Menu Guide—Custom Settings
Custom Setting a4: Focus Tracking with Lock-On
This option controls how autofocus adjusts to
sudden large changes in the distance to the sub-
ject. Highlight a4 Lock-On in the second level
of the CSM menu (
169) and press the multi
selector to the right. Press the multi selector up
or down to highlight an option, then press to the
right to make a selection.
Option Description
On
(default)
Camera waits before adjusting focus when distance to subject
changes abruptly. Prevents camera from refocusing when subject
is briefl y obscured by objects passing through frame.
Off
Camera immediately adjusts focus when distance to subject
changes abruptly. Use when photographing series of subjects at
varying distances in quick succession.
Custom Setting a5: AF Activation
This option controls whether both the shutter-
release button and the AF-ON buttons can be
used to initiate autofocus or whether autofocus
is only initiated when one of the AF-ON buttons is
pressed. Highlight a5 AF activation in the sec-
ond level of the CSM menu (
169) and press the
multi selector to the right. Press the multi selector up or down to highlight
an option, then press to the right to make a selection.
Option Description
Shutter/AF-ON
(default)
Autofocus can be performed with AF-ON buttons or by pressing
shutter-release button halfway.
AF-ON only Autofocus can only be performed using AF-ON buttons.