Canon Speedlite 550EX Instructions Manual page 26

26
2. Using Flash in Other Camera Modes
Flash photography is also automatic in the other picture-taking modes. In the
A v (aperture-priority AE), Tv (shutter speed-priority AE). and M modes, the
E·nL
auloflash
system sets the flash exposure automatically. The camera
sets the necessary shutter speed (in the Av mode), aperture (in the Tv mode) ,
or flash output (in the M mode). Flash photography is as easy as normal AE
picture-taking.
Shutter Speed and Aperture Settings for Picture-Taking Modes
C _aMocle
A,
"
M
Sh _ _
AlJlomaticaly set (30 sec.' IIX $&C.)
Manually set (30
se<:.'
llX see.]
Manually set (bulb, 30 sec.' l lX sec.]
Manually set: You set
it
yoursell.
Autom<llicaly set: Set autOlTlilIically
b¥
!he eamera.
I /)(
sec.:
MaJtimum sync speed. (see
page 124)
Automatically $&1
Manually set
WIlen tile shuhe< buhOl'l
is
prnsed
completely, a preflash tires to obtain an 8\laluative Hash
meter reading lor sening
the
optimum output Of the mail'l !lash.
The backg round's exposure is set with the shutter speed and aperture combination.
II the
camera
is set to the CI
mode
(Ful Auto), the
shutter
speed and aperture will be
sel il'l!he same way as in !he P
mode
(Program AE).
II the
DEP
mode
(depIh-ol·1ieId AE) is
used with the
55OEX,
it
d be
Ille lime as
UsWlg !he P
mode
(Program ,I.E).