Nikon D100 - Manual (Page 170)

Custom Settings
Menu Guide—Custom Settings
158
Custom Setting 22: AF Assist
This option controls whether the AF-assist illumi-
nator lights to help with the autofocus operation
when the subject is poorly lit (
72).
OK
AF Assist
Illuminatior F22
CSM MENU
OFF
ON
OFF
ON
Option Description
ON
(default)
AF-assist illuminator lights automatically when subject is poorly
lit.
OFF AF-assist illuminator off.
Custom Setting 23: Flash Mode
By default, the amount of light produced by the
built-in Speedlight is controlled automatically us-
ing D-TTL flash control (
95). Using this option,
you can set the built-in Speedlight to fire at full
output with every photograph (manual mode).
Built-in
Flash Mode
D-TTL auto flash
Manual flash
F23
CSM MENU
OK
Option Description
Manual flash
When built-in Speedlight is raised, flash fires at full output with
every shot (GN at ISO 200 18/59, at ISO 100 12.7/42, m/ft).
Flash exposure compensation indicators (
) in control panel
and viewfinder blink on and off. No monitor pre-flash is emit-
ted, allowing the built-in Speedlight to function as a master
flash to drive optional slave flash units.
D-TTL auto flash
(default)
When built-in Speedlight is raised, flash output is adjusted au-
tomatically in response to shooting conditions (
99). Flash
output can be adjusted using flash exposure compensation (
102).