Canon 550EX manual Balanced Flash Exposures

Using Flash in Other Camera Modes

●Balanced Flash Exposures

In low-light situations, the exposure level can be balanced between the subject and background by using a slow sync speed. You can obtain balanced flash exposures automatically by setting the camera’s picture-taking mode to Av. The camera then sets the sync speed automatically to suit the background. Using a tripod is recommended to prevent camera shake.

Balanced flash exposure. Flash exposure in the Full Auto mode.

• To disable automatic balanced flash exposures, set the camera’s picture-taking mode to M. You can then set the desired shutter speed and aperture manually. See page 84.

Based on the shutter speed and aperture you set, the TTL autoflash system controls the flash exposure automatically.

•If you are using the Canon EF 135mm f/2.8 soft focus lens on your camera without a tripod, setting the shutter speed and aperture manually is most effective for obtaining soft-focus effects. Follow the procedure below.

1)Set an aperture near the maximum aperture.

2)Set the minimum shutter speed required to prevent camera shake.

3)Check that the flash has recharged, then take the picture.

•To obtain balanced flash exposures in the Tv mode, set the shutter speed until the meter reading indicates a correct exposure.

•To obtain balanced flash exposures in the M mode, set the shutter speed and aperture until the meter reading indicates a correct exposure.

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