Canon EOS 70D Instruction Manual

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Canon EOS 70D Instruction Manual Manual pdf 171 page image

171In this mode, the shutter stays open as long as you hold down theshutter button completely, and closes when you let go of the shutterbutton. This is called bulb exposure. Use bulb exposures for nightscenes, fireworks, astronomical objects, and other subjects requiringlong exposures.1 Set the Mode Dial to <F>.2 Set the desired aperture.While looking at the LCD panel, turnthe <6> or <5> dial.3 Take the picture.The exposure will continue for as longas you keep the shutter buttonpressed completely.X The elapsed exposure time will bedisplayed on the LCD panel.F: Bulb ExposuresElapsed exposure timeLong exposures produce more noise than usual.If Auto ISO is set, the ISO speed will be ISO 400 (p.122).When [z4: Long exp. noise reduction] is set to [Auto] or [Enable],noise generated by the long exposure can be reduced (p.143).For bulb exposures, using a tripod and a remote switch (sold separately,p.184) is recommended.You can also use a remote controller (sold separately, p.184) for bulbexposures. When you press the remote controller’s transmit button, thebulb exposure will start immediately or 2 sec. later. Press the buttonagain to stop the bulb exposure.COPY