2) tv: shutter speed-priority ae and ttl autofiash, 6c 5.b i – Canon 550EX User Manual
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Using Flash in Other Camera Modes
(2) Tv: Shutter Speed-Priority AE and TTL
Autofiash
By selecting the shutter speed, you can obtain various effects with flash. You
can set the shutter speed from 30 sec. to the top sync speed. The camera
then sets the aperture automatically to obtain a correct exposure for the
background. The TTL autoflash system controls the flash exposure based on
the camera-selected aperture.
H Set the camera’s picture-taking mode
* to Tv and set the desired shutter
speed anywhere from 30 sec. to the
top sync speed.
Set the 550EX’s flash mode to
T T L
Focus the subject.
0.5 0.7 I 1.5 2
3 4
6 9 13 18 m
A
Check that the subject distance is
^ within the flash range displayed on
the 550EX’s LCD panel.
6C 5.B i
C Check that the
i
icon is displayed in
^ the viewfinder, then take the picture.
IS If the aperture display blinks, the background may turn out overexposed or
ll|l underexposed. In such a case, change the shutter speed until the aperture display stops
blinking.
I
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