Nikon D1X User Manual page 177

Custom Settings
Custom Setting 7: AE Lock
By default, exposure is locked by pressing the AE-L/AF-L but-
ton. This can be changed so that exposure is locked by press-
ing the shutter-release button halfway.
Option
AE-L/AF-L Button
(default)
+ Shutter Button
Custom Setting 8: Mirror Lock-up for CCD Cleaning
This option is used to lock the mirror in the up position while
inspecting or cleaning the low-pass filter that covers the CCD.
See "Technical Notes: Caring for Your Camera" (
Option
OFF
(default)
CCD Cleaning
For more information on:
pg. 96 Auto-exposure lock
164
(continued)
No.
Pressing the AE-L/AF-L button locks exposure.
Exposure is locked while the shutter-release button
is pressed halfway.
No.
Mirror not locked in up position.
Mirror locked in up position. To ensure that power
is available to lower the mirror after cleaning, this
option only takes effect when the camera is pow-
ered by an EH-4 AC adapter (available separately).
CSM MENU
F7 AE Lock
OFF AE-L/AF-L Button
ON + Shutter Button
Description
CSM MENU
F8 Mirror Lock-up
for CCD Cleaning
pg. 196).
OFF OFF
ON CCD Cleaning
Description
OK
OK