How to use the bulb setting on the EOS 20D, EOS 30D, and EOS 40D.
Article ID: ART160530 |
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Date published: 06/09/2015 |
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Date last updated: 08/18/2015 |
Description
How to use the bulb setting on the EOS 20D, EOS 30D, and EOS 40D.
Solution
When bulb is set, the shutter stays open while you hold down the shutter button fully, and closes when you let go of the shutter button. This is called bulb exposure. Use bulb exposures for night scenes, fireworks, the heavens, and other subjects requiring long exposures.
Since bulb exposures may have more noise than usual, the image may look rough or grainy.
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- Bulb exposures may result in grainy images due to picture noise. You can reduce noise by setting C.Fn-02 [Long exposure noise reduction] to [1:On].
- For bulb exposures, using Remote Switch RS-80N3 or Timer Remote Controller TC-80N3 ( optional) is recommended.
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