Canon EOS 7 - Manual (Page 78)

Flash Photography with an EX-Series Speedlite
Full Auto Flash
Full Auto E-TTL autoflash used in the <P> Program AE mode is explained
below. For more details on using Speedlite 420EX, see the Speedlite
420EX instruction booklet.
Set the Command Dial to <p>.
Check that the 420EX’s pilot lamp
is lit.
! tj A e c
cd
I
i
1
;
i a
ci
51 F
ocus
the subject.
50 5.5
Take the picture.
• Make sure the flash-ready indicator
< i > is lit, and check the shutter
speed and aperture displays before
faking the picture.
E-TTL Autoflash in Other Shooting Modes
Even in the <Tv>, <Av>, and <M> modes, E-TTL autoflash is as easy as
normal picture-taking without flash.
(1)When you press the shutter button halfway, the camera sets the shutter
speed and aperture.
Mode Shutter Speed Setting Flash Aperture Setting
Tv
(Shutter speed-priority AE) Manual (30 sec. -1/125 sec.) Auto
Av
(Aperture-priority AE) Auto (30 sec. -1/125 sec.) Manual
M
(Marrual) Manual (30 sec. -1/125 sec.) Manual
(2) When you press the shutter button completely, preflash evaluative
metering based on the aperture set in (1) is used for the E-TTL
autoflash exposure.
(3) The background exposure is set by the shutter speed and aperture
combination.
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