Canon PowerShot 350 Service Manual - Page 17

Flash, Exposure, Compensation, White, Balance

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Part 1: GeneralInformation 2.5 FLASH 1. The flash mode is set by pressing the flash button. The modes are set in a closed-loop sequence: Auto(matic) (no indication) to Red-eye Reduction Flash cm to Flash OFF ® to Flash ON and return to Automatic. 1) AUTO: If the shutter speed falls to 1/30 second, the flash mark is displayed and the flash fires automatically. 2) Red-Eye After one pre-flash, the main flash fires (Flash fires regardless Reduction: of ambient light conditions.) 3) Flash OFF: The flash does not fire. 4) Flash ON: The flash fires regardless of ambient light conditions. When the power switched is turned on, the AUTO mode is set. When switching from Record to Playback and back to Record, the selected mode remains the same. 2. If the flash is not charged, the flash mark on the LCD will flash and the shutter will not release. 3. In the AUTO mode, the flash mark ( ) lights before the flash fires so the photogra- pher is not caught off guard. 2.6 EXPOSURE COMPENSATION When the exposure compensation (+/-) button is pressed, E±0 appears on the screen. This is normal exposure. When the larger + (or -) button are pressed the indication changes to E+1, E+2, E+3 and stops at E+4. Each of these steps is 1/3EV, (not 1EV); so the actual compensation range is -±1.33EV. The LCD image also lightens (+) or darkens (-) as compensation is applied. • When the power switched is turned on, normal exposure (no indication) is set. • When switching from Record to Playback and back to Record, the selected mode remains the same. 2.7 WHITE BALANCE 1. Automatic white balance is the default mode for this camera. If the W. BAL button is pressed, white balance can be set manually. Sequence: Auto White Balance (no indication) -40 Manual White Balance • When power switched is turned on, auto white balance (no indication) is set. • When switching from Record to Playback and back to Record, the selected mode remains the same. • The manual white balance setting remains in the memory until the white balance is manually reset. 2. To manually set the White balance, fill the screen with a white image and press and hold the W. BAL button. After about two seconds, the 04 mark will flash then light steadily. The white balance has been set manually. The manual setting remains in the memory when switching between record and playback. It also remains when the power is turned off, but the camera returns to Automatic .1 white balance mode. To use the memorized value, press the W. BAL button so the mark is displayed. 1-7

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Part
1:
General
Information
2.5
FLASH
1.
The
fl
ash
mode
is
set
by
pressing
the
flash
button.
The
modes
are
set
in
a
closed
-loop
sequence:
Auto(matic)
(no
indication)
to
Red
-eye
Reduction
Flash
cm
to
Flash
OFF
®
to
Flash
ON
and
return
to
Automatic.
1)
AUTO:
If
the
shutter
speed
falls
to
1/30
second,
the
fl
ash
mark
is
displayed
and
the
fl
ash
fires
automatically.
2)
Red
-Eye
After
one
pre
-flash,
the
main
fl
ash
fires
(Flash
fires
regardless
Reduction:
of
ambient
light
conditions.)
3)
Flash
OFF:
The
fl
ash
does
not
fi
re.
4)
Flash
ON:
The
fl
ash
fires
regardless
of
ambient
light
conditions.
When
the
power
switched
is
turned
on,
the
AUTO
mode
is
set.
When
switching
from
Record
to
Playback
and
back
to
Record,
the
selected
mode
remains
the
same.
2.
If
the
fl
ash
is
not
charged,
the
fl
ash
mark
on
the
LCD
will
fl
ash
and
the
shutter
will
not
release.
3.
In
the
AUTO
mode,
the
flash
mark
(
)
lights
before
the
fl
ash
fires
so
the
photogra-
pher
is
not
caught
off
guard.
2.6
EXPOSURE
COMPENSATION
When
the
exposure
compensation
(+/-)
button
is
pressed,
E±0
appears
on
the
screen.
This
is
normal
exposure.
When
the
larger
+
(or
-)
button
are
pressed
the
indication
changes
to
E+1,
E+2,
E+3
and
stops
at
E+4.
Each
of
these
steps
is
1/3EV,
(not
1EV);
so
the
actual
compensation
range
is
-±
1.33EV.
The
LCD
image
also
lightens
(+)
or
darkens
(-)
as
compensation
is
applied.
•
When
the
power
switched
is
turned
on,
normal
exposure
(no
indication)
is
set.
•
When
switching
from
Record
to
Playback
and
back
to
Record,
the
selected
mode
remains
the
same.
2.7
WHITE
BALANCE
1.
Automatic
white
balance
is
the
default
mode
for
this
camera.
If
the
W.
BAL
button
is
pressed,
white
balance
can
be
set
manually.
Sequence:
Auto
White
Balance
(no
indication)
-40
Manual
White
Balance
•
When
power
switched
is
turned
on,
auto
white
balance
(no
indication)
is
set.
•
When
switching
from
Record
to
Playback
and
back
to
Record,
the
selected
mode
remains
the
same.
•
The
manual
white
balance
setting
remains
in
the
memory
until
the
white
balance
is
manually
reset.
2.
To
manually
set
the
White
balance,
fill
the
screen
with
a
white
image
and
press
and
hold
the
W.
BAL
button.
After
about
two
seconds,
the
04
mark
will
fl
ash
then
light
steadily.
The
white
balance
has
been
set
manually.
The
manual
setting
remains
in
the
memory
when
switching
between
record
and
play-
back.
It
also
remains
when
the
power
is
turned
off,
but
the
camera
returns
to
Automatic
white
balance
mode.
To
use
the
memorized
value,
press
the
W.
BAL
button
so
the
.1
mark
is
displayed.
1-7