Another example of this use is
when you set the white balance
(which controls how the D200
reacts to illumination sources of
different colors, such as daylight
and incandescent light). The main
command dial flips among the dif-
ferent light-source types, while the
sub-command dial fine-tunes
those settings. Although you can
swap the command dials (turning
the sub-command dial into the
command dial, and vice versa)
using the D200’s menus, it’s best
to leave them in their default con-
figuration to start out.
✦ Front lamp. This front-mounted
source of illumination serves three
different functions: autofocus assist
lamp, self-timer lamp, and red-eye
reduction lamp. Under dim lighting
conditions that make autofocusing
difficult, you can set this light
source to cast a little extra light on
your subject to assist the autofocus
system. If you’ve set your camera
to self-timer mode, so that a pic-
ture is taken after a short delay, the
lamp blinks in a pattern as a sort
of countdown to the eventual
exposure. Finally, this lamp also
can send out a little blast of light
Chapter 1 ✦ Exploring the Nikon D200 13
Shutter
release
On/Off switch LCD illuminator
Func buttonHandgrip
Sub-command dial
Depth-of-field preview
Autofocus assist lamp
Self-timer lamp
Red-eye reduction lamp
1.2 Nikon D200 left-front side, viewed from the subject’s position.
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