F: Bulb Exposures - Canon EOS 6D Instruction Manual

F: Bulb Exposures

When bulb is set, the shutter stays open as long as you hold down the
shutter button completely, and closes when you let go of the shutter
button. This is called bulb exposure. Use bulb exposures for night
scenes, fireworks, astronomical objects, and other subjects requiring
long exposures.
Elapsed exposure time
Long exposures produce more noise than usual.

If ISO Auto is set, the ISO speed will be ISO 400 (p.108).

Do not point the camera toward an intense light source, such as the sun

on a sunny day or an intense artificial light source. Doing so may
damage the image sensor or the camera's internal components.
When [z4: Long exp. noise reduction] is set to [Auto] or [Enable],

noise generated by the long exposure can be reduced (p.128).
For bulb exposures, using a tripod and Remote Switch RS-80N3 (sold

separately) or Timer Remote Controller TC-80N3 (sold separately) is
recommended (p.167).
You can also use a remote controller (sold separately, p.167) for bulb

exposures. When you press the remote controller's transmit button, the
bulb exposure will start immediately or 2 sec. later. Press the button
again to stop the bulb exposure.
154
Set the Mode Dial to <F>.
1
Set the desired aperture.
2
While looking at the LCD panel, turn

the <6> or <5> dial.
Take the picture.
3
The exposure will continue for as long

as you keep the shutter button
pressed completely.
The elapsed exposure time will be
displayed on the LCD panel.