V1.02
Thom Hogan’s Complete Guide to the Nikon D300
Page 531
Custom Setting #A6 Focus Area Illumination
(AF point illumination)
The focus area indicators in the viewfinder normally light up
briefly in red to indicate which ones are being used to initiate
focus.
Auto
Sensors only use brief red highlight when
necessary to distinguish them due to lack of
scene brightness [default]
On
Sensors always light briefly in red to show
which one will be used for focus information
Off
Sensors
never
light
in
red
Recommendations
:
1. Personally, I like the default. In dim light I get the brief red
boost to help find the selected sensor, in bright light the
black outline is good enough.
2. You’re probably wondering why you might want to turn
this off. One word: power. If you set
On
, you’ll be using a
tiny bit more power every time you move autofocus
around. The default is a good balance between power
consumption and visibility, but if you’re a power miser,
select
Off
.