Canon Speedlite 420EX User Manual
Page 37
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Flash in Other Picture-Taking Modes
Tv: TTL Autoflash and Shutter Speed-Priority AE
When you want to use the shutter speed to create a certain effect, set the
camera to shutter speed-priority AE. In this mode, you set the shutter
speed anywhere from 30 sec. to the camera's fastest sync speed. The
camera then sets the aperture automatically to obtain the correct
background exposure. TTL autoflash controls the flash output based on the
set aperture.
* •
¡as 4.0
i
•
Set the camera to the <Tv> mode.
Set the desired shutter speed.
• Turn the camera's electronic dial to
set the shutter speed.
• Set the shutter speed anywhere from
30 sec. to the camera's fastest sync
speed.
Take the picture.
• Focus the subject, check that the
< 't >
icon is lit in the viewfinder, then
take the picture.
Q If the minimum aperture setting blinks, the background will be overexposed. If
the maximum aperture setting blinks, the background will be underexposed.
Change the shutter speed until the aperture setting stops blinking.
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