Flash Photography with the EOS-Dedicated 550EX Speedlite

FE Lock

Taking FE Lock pictures with the 550EX Speedlite is the same as described in “FE Lock” (94) for the built-in flash. In step 1, be sure the 550EX Speedlite pilot lamp is on.

The flash mode may be either normal flash or high-speed sync. The FE lock operates with either mode.

Flash Exposure Compensation

For flash pictures with flash exposure compensation, see “Flash Exposure Compensation” for the built-in flash. (95)

Modeling Flash

Modeling flash allows you to see shadows, light balance, and other effects produced by multi- light settings.

Check that the camera and

1 Speedlite are properly set for flash photography.

Press the camera ’s depth-of-field

2 preview button.

The Speedlite fires at 70Hz for approximately one second.

Wireless Multi-Light/E-TTL Autoflash Photography

The 550EX Speedlite can be operated as a slave light from a master (550EX or ST-E2) for easy wireless multi-light/E-TTL autoflash photography. The slave 550EX is placed to supplement the master flash, which provides the primary flash for the subject.

This is a Type-A camera. For details, refer to the user’s guide for your Speedlite.

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Flash Photography

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Canon 30D28135, 30D1785, 9337B001 manual Modeling Flash, Wireless Multi-Light/E-TTL Autoflash Photography