Flash in other picture-taking modes – Canon Speedlite 420EX User Manual
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Flash in Other Picture-Taking Modes
You can also use TTL autoflash with the camera set to <Av> (aperture-
priority AE), <Tv> (shutter speed-priority AE), or <M> (manual).
Shutter Speed and Aperture Settings According to Mode
Mode
Shutter Speed
Flash Aperture
P (Program AE)
Automatically set (1/60 sec. - 1/x sec.)Automatically set
Av (Aperture-priority AE)
Automatically set (30 sec. - t/x sec.)
Manually set
Tv (Shutter speed-priority AE)
Manually set (30 sec. - 1/x sec.)
Automatically set
M (Manual)
Manually set (buLb, 30 sec. - 1/x sec.)
Manually set
Manually set: Set by you.
Automatically set: Set by the camera.
1/x sec.: Camera's fastest sync speed, (^page 52)
When you press the shutter button completely, the flash is fired and the picture is
taken. The flash output is controlled by TTL autoflash (olf-the-film flash metering
cuts off the flash when the correct exposure is obtained) based on the aperture set.
The background exposure is set according to the shutter speed and aperture
combination.
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With Type-B cameras, the < V
h
> switch does not function.
If flash is used in the <DEP> (depth-of-field AE) mode, it will be the same as
using flash in the <P> (Program AE) mode.