Canon A450 - Manual (Page 75)

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Subject in recorded image is too dark.
Insufficient light for shooting. z Set the flash to (Flash on)
(Basic Guide p. 13).
The subject is
underexposed because the
surroundings are too bright. z Set the exposure compensation to
a positive (+) setting
(p. 38) .
z Use the spot metering function (p.
37) .
Subject is too far away for
flash to reach. z Shoot within correct flash range of
the subject when using the built-in
flash
(p. 96) .
z Raise the ISO speed and then
shoot
(p. 45) .
Subject in recorded image is too bright, or
image flashes white.
Subject is too close, making
the flash too strong. z Shoot within correct flash range of
the subject when using the built-in
flash
(p. 96) .
The subject is overexposed
because the surroundings
are too dark. z Set the exposure compensation to a
negative (–) setting
(p. 38) .
z Use the spot metering function (p.
37) .
Too much light is shining
directly into the camera, or
is being reflected off the
subject. z Change the shooting angle.
Flash is set to on. z Set the flash to (Flash off)
(Basic Guide p. 13).
Image contains noise.
ISO speed is too high. z Higher ISO speeds and (High
ISO Auto) setting may increase
image noise. For higher image
quality, use as low an ISO speed
as possible
(p. 45) .
z In , and modes, the ISO
speed increases and noise can
appear.