Nikon D750 DSLR Camera (Body Only) - Manual (Page 123)

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Long Time-Exposures (M Mode Only)
Select the following shutter speeds for
long time-exposures of moving lights,
the stars, night scenery, or fireworks.
• Bulb ( A ) : The shutter remains open
while the shutter-release button is
held down. To prevent blur, use a
tripod or an optional wireless remote
controller (
0 197, 444) or remote cord
( 0 443).
• Time ( % ) : Start the exposure using the shutter-release button
on the camera or on an optional remote control, remote cord,
or wireless remote controller. The shutter remains open for
thirty minutes or until the button is pressed a second time.
Before proceeding, mount the camera on a tripod or place it on
a stable, level surface. To prevent light entering via the
viewfinder from appearing in the photograph or interfering with
exposure, remove the rubber eyecup and cover the viewfinder
with the supplied eyepiece cap (
0 107). Nikon recommends
using a fully charged battery or an optional AC adapter and
power connector to prevent loss of power while the shutter is
open. Note that noise (bright spots, randomly-spaced bright
pixels, or fog) may be present in long exposures; before
shooting, choose
On for Long exposure NR in the photo
shooting menu ( 0 317).
Length of exposure: 35 s
Aperture: f/25