Full Auto Flash - Canon EOS-3 Instructions Manual

Full Auto Flash

Full Auto E-TTL autoflash used with the Program AE mode is described
here. For details on Speedlite 550EX operations, see the Instructions that
came with it.
E-TTL Autoflash in Other Shooting Modes
Even in the Tv, Av, and M modes, E-TTL autoflash can be used as easily
as without flash.
(1) When you press the shutter button, the shutter speed and aperture
are set by the camera as usual.
Mode
Tv (Shutter speed-priority AE)
Av (Aperture-priority AE)
M (Manual)
(2) When you press the shutter button completely, preflash evaluative
metering based on the aperture setting is used for the flash exposure.
(3) The background exposure is set by the shutter speed and aperture
combination.
Flash Photography with Speedlite 550EX
Set the camera's shooting mode to
1
P.
Check that the 550EX's pilot lamp
2
is lit.
Focus the subject.
3
Make sure the flash-ready indicator
4
is lit, check the shutter speed
and aperture, then take the picture.
Shutter Speed Setting
Manual (30 sec. - 1/200 sec.)
Auto (30 sec. - 1/200 sec.)
Manual (30 sec. - 1/200 sec.)
Flash Aperture Setting
Auto
Manual
Manual
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