Canon Speedlite 420EX Instruction Manual - Page 26
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High-Speed Sync (FP Flash) .8 - 2O1 .1.2. • Take the picture. • Focus the subject, check that the icon is lit in the viewfinder, then take the picture. 51 • Using high-speed sync changes the Guide No. See page 50. • If you want to set the aperture, first set the camera to the < Av > or mode. • With high-speed sync, the Guide No. changes depending on the sync speed. The faster the sync speed, the shorter the effective flash range will be. • To cancel high-speed sync, set the high-speed sync switch back to < • >. When the mode is set for fill flash and high-speed sync is set, the sync speed will not be limited to the normal sync speed. If necessary, a faster sync speed will be set automatically in the high-speed sync mode. 26
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High
-Speed
Sync
(FP
Flash)
.8
-
2O
1
.1.2.
•
Take
the
picture.
•
Focus
the
subject,
check
that
the
icon
is
lit
in
the
viewfinder,
then
take
the
picture.
51
•
Using
high-speed
sync
changes
the
Guide
No.
See
page
50.
•
If
you
want
to
set
the
aperture,
first
set
the
camera
to
the
<
Av
>
or
<M>
mode.
•
With
high-speed
sync,
the
Guide
No.
changes
depending
on
the
sync
speed.
The
faster
the
sync
speed,
the
shorter
the
effective
flash
range
will
be.
•
To
cancel
high-speed
sync,
set
the
high-speed
sync
switch
back
to
<
•
>.
When
the
<Av>
mode
is
set
for
fill
flash
and
high-speed
sync
is
set,
the
sync
speed
will
not
be
limited
to
the
normal
sync
speed.
If
necessary,
a
faster
sync
speed
will
be
set
automatically
in
the
high-speed
sync
mode.
26