a: Manual Exposure
Using Speedlite 90EX
To obtain a correct flash exposure for the main subject, the flash output will be set automatically to match the set aperture (autoflash exposure). You can set the shutter speed from 1/200 sec. to 30 sec. or bulb.
BULB: Bulb Exposures
A bulb exposure keeps the shutter open for as long as you hold down the shutter button. It can be used to photograph fireworks and other subjects requiring long exposures.
As explained in step 3 on page 148, either tap [Y] or turn the <5> dial to the left to select [BULB], then press the shutter button. The elapsed exposure time will be displayed on the LCD monitor.
Since bulb exposures produce more noise than usual, the image may look a little grainy.
When [A4: Long exp. noise reduction] is set to [Auto] or [Enable], noise generated by the long exposure can be reduced (p.161).
For bulb exposures, using a tripod is recommended.
You can also use a Remote Controller (sold separately, p.291) 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.
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