Nikon D100 - Manual (Page 175)

Camera Setup
Menu Guide—The Setup Menu
163
Adjusting Monitor Brightness: LCD Brightness
This option controls monitor brightness. Press the
multi selector up to increase brightness, down to
decrease. The number to the right of the display
indicates the current brightness level, with 2 the
brightest setting and –2 the darkest. Press the
multi selector to the right to put your choice into
effect and return to the setup menu.
Readying the CCD for Inspection: Mirror Lock-up
This option is used to lock the mirror in the up
position so that you can inspect or clean the low-
pass filter that protects the CCD. See “Technical
Notes: Caring for the Camera and Battery”.
0
OK LCD Brightness
SET UP
OK
Mirror Lock-up
OFF
CCD Cleaning OFF
ON
SET UP
Option Description
OFF Mirror functions normally.
CCD Cleaning
Mirror will be locked in up position when shutter is released.
To ensure that power is available to lower the mirror when the
camera is turned off, this option is only available when the cam-
era is powered by an EH-5 AC adapter (available separately).