Canon Speedlite 550EX Instructions Manual page 32

32
1. High-Speed Sync (FP Flash)
When you set the synchronization mode to high-speed sync (FP flash). the
camera can synchronize with the 550EX al all shutter speeds. When high-
speed sync has been set,
~H
is displayed in the viewfinder.
High-speed sync can be used in the E-TIL and M 1 1<151' 1 modes.
High-s.peed
sync is
especially eUetlive lor fill-flash ponlails In daylight $ince you can:
(1) Obtain bettef bac:kgrOl.lnd
~Uf
wi\t1
a
largBf
apenufe .
(2) Create a ca\chlighl
in
the S!Ibjed's eyes.
(3) Softllll
shadOW$
on the Sl.Ibjea's face.
Av /
/ ETTL
ETTLIS
loom
SCmm
. . .
'
,
,.
..........
~
9~ {~~, ~
1
Select the camera's picture-taking
mode and the Speedlile's flash
mode.
II
you want to use a
large aperture (sma ll er f·
number). set
the
Av or M mode.
2
Press the
<
+
>
and
< - >
buttons
simultaneously to select
I!I
on the
LCD
panel.
Each lime you press the ",
+ ;>
and
< - >
buttons simultallE!CU$fy, the salting changes
In
the
IoIowing loop.
~-
.. . .
~ Ei1
•
t:t)o-
(011) ..
3
Focus the subject.
4
Check that the subject is within the
flash range displayed on the
550EX '~
LCD
panel.