Flash Photography with the EOS-Dedicated 550EX Speedlite

Full Auto Flash

Using the <> (Program AE) mode with E-TTL autoflash is described below. Regarding the operation of the 550EX, refer to the Speedlite's instructions.

 

 

1 Set the Mode Dial to < >.

MODE

SELE

Make sure the 550EX Speedlite’s
2 pilot lamp is on.

PILOT H

 

 

 

Focus the subject, and take the

 

 

3 picture.

 

 

● Make sure the flash-ready indicator < > is

 

 

on, and check the shutter speed and

 

 

aperture value before taking the picture.

Taking Flash Pictures in Each Shooting Mode

Even in < >, < >, and <

> modes, E-TTL autoflash is as easy as normal picture-taking

without flash.

 

 

(1)Press the shutter button down halfway to have the camera automatically set the shutter speed or aperture value, just as in normal picture-taking without flash.

Mode

Shutter speed setting

Aperture (flash aperture) setting

(Shutter-priority AE)

Manual (30 to 1/200 sec.)

Auto

 

 

 

(Aperture-priority AE)

Auto (30 to 1/200 sec.)

Manual

 

 

 

(Manual exposure)

Manual (30 to 1/200 sec.)

Manual

 

 

 

∗If < > is set in low-light conditions, a slow shutter speed will be set. Therefore, use a tripod to prevent camera shake.

(2)When you press the shutter button completely, a preflash will be fired based on the aperture set in (1) and the picture will be taken with E-TTL autoflash.

(3)The background exposure is determined by the shutter speed and aperture value.

● Flash photography in < >mode operates the same as in < > mode. ● In the Basic Zone modes (→18), it will be automatic and as easy as flash

photography with the built-in flash.

● You can disable the EX-series Speedlite from firing. (C.Fn-5-3→122)

●You can set the camera to apply a fixed shutter speed of 1/200 for flash photography in aperture-priority AE mode. (C.Fn-6→124)

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Photography Flash

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