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Thank
you
far
purchasing
a
Canon
product
.
The
Canon
Speedlite
58QfX
is
an
EOS-dedicated,
high-output
flash
unit
automatically
compatible
with
E-TTL
II,
E-TTL,
and
TTL
autoflash
.
It
can
be
used
in
three
different
wags
:
As
a
normal
on-camera
flash,
the
master
unit
for
a
wireless,
multi-Speedlite
flash
system,
or
a slave
unit
.
Read
this
instruction
manual
while
also
referring
to
yourcamera's
instruction
manual
.
Before
using
the
Speedlite,
read
this
instruction
manual
and
your
camera's
instruction
manual
to
familairize
yourself with
the
Speedlite
operations
.
s
The
basic
operation
is
the
same
as
with
normal
AE
shooting
.
When
the
58DEX
is
attached
to
an
EMS
camera
;
almost
all
automatic
exposure
control
for
flash
photography
is
handled
by the
camera
.
It
is
almost
the
same
as
using
the
camera's
built-in
flash
if
it
has
one
.
Youcan
think
of
the
580EX
as a
built-in,
high-output
flash
.
It
is
automatically
compatible
with
the
camera's
flash
metering
mode
{E-TTL
II,
E-TTL,
and
TTL}
.
The
camera
controls
the
Speedlite
automatically
in
the
following
flash
metering
modes
:
1
.
E-TTL
II
autoflash
(evaluative
flash
metering
with
preflash
reading/lens
distance
information)
2
.
E-TTL
autoflash
(evaluative
flash
metering
with preflash reading)
3
.
TTL
autoflash
(off-the-film
metering
for
real-time
flash
metering)
Regarding
the
camera's
available
flash
metering
modes,
refer
to
the
camera's
instruction
manual
.
The
Speedlite's
major
specifications
are
listed
in
"External
Flash Items
:"
The
camera
instruction
manual's
chapter on
flash
photography
will
refer
to
cameras
having 1
and
2
as
a
Type-A
camera
(compatible
with
E-TTL
or
E-TTL
II)
.
And
cameras
having 3 (compatible
with
only
TTL)
are
called
Type-113
cameras
.
This
instruction
manual
assume
that
you
are
usingthe
580EX
with
a
Type-A
camera
.
For
Type-B
cameras,
see
page
53
.
2