Nikon D100 - Manual (Page 171)

Fine-Tuning Camera Settings
Menu Guide—Custom Settings
159
Custom Setting 24: Anti-shock
Normally, the mirror is raised out of the way of
the CCD immediately before the shutter opens to
create an exposure. To minimize camera shake in
situations in which the least camera movement
can blur photographs (for example, microscope
photography), the exposure can be delayed until
after the vibrations created by the mirror being
raised have had a chance to subside.
OK
Anti-mirror-shock
mode F24
CSM MENU
OFF
ON OFF
ON
Option Description
OFF
(default)
The shutter is released when the mirror is raised.
ON Exposure is delayed until after the mirror is raised.