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Flash Photography
4
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 < >.
2
Make sure the 550EX Speedlite’s
pilot lamp is on.
3
Focus the subject, and take the
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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