Canon PowerShot A510 PowerShot A520/A510 Camera User Guide - Page 79

Program AE, Setting the Shutter Speed

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Advanced Functions Program AE Use the program AE mode to have the camera automatically set the shutter speed and aperture value to match the brightness of the scene. z The shutter speed and aperture value will show in red on the LCD monitor when the correct exposure cannot be obtained. Use the following methods to obtain the correct exposure and make them appear in white. • Use the flash • Change the ISO speed setting • Change the metering mode Differences between the P and Modes. z The following settings can be adjusted in P mode, but not in mode. • Exposure Compensation • White Balance • ISO Speed • Flash (Flash on) • AF frame selection • Photo Effects • Continuous Shooting • Manual Focus • Metering Mode z For the correlation between aperture value and shutter speed, see page 78. Shooting - Advanced Functions Setting the Shutter Speed When you set the shutter speed in the shutterspeed priority AE mode, the camera automatically selects an aperture value to match the brightness. Faster shutter speeds allow you to catch an instantaneous image of a moving subject while slower speeds create a flowing effect and allow you to shoot without a flash in dark areas. z If the aperture value shows in red, the image is underexposed (insufficient light) or overexposed (too much light). Adjust the shutter speed using the or button until the aperture value display turns to white. z The nature of CCD image sensors is such that noise in the recorded image increases at slow shutter speeds. This camera, however, applies special processing to images shot at shutter speeds slower than 1.3 seconds to eliminate the noise, thereby producing high-quality images. Nevertheless, a certain amount of processing time may be required before the next image can be shot. 77

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77
Shooting – Advanced Functions
Advanced Functions
Program AE
Use the program AE mode to have the camera
automatically set the shutter speed and aperture
value to match the brightness of the scene.
The shutter speed and aperture value will show
in red on the LCD monitor when the correct
exposure cannot be obtained. Use the following
methods to obtain the correct exposure and
make them appear in white.
• Use the flash
• Change the ISO speed setting
• Change the metering mode
Differences between the P and
Modes.
The following settings can be adjusted in
P
mode, but not in
mode.
For the correlation between aperture value and
shutter speed, see page 78.
• Exposure Compensation
• ISO Speed
• AF frame selection
• Continuous Shooting
• Manual Focus
• White Balance
• Flash (Flash on)
• Photo Effects
• Metering Mode
Setting the Shutter Speed
When you set the shutter speed in the shutter-
speed priority AE mode, the camera automatically
selects an aperture value to match the brightness.
Faster shutter speeds allow you to catch an
instantaneous image of a moving subject while
slower speeds create a flowing effect and allow
you to shoot without a flash in dark areas.
If the aperture value shows in red, the
image is underexposed (insufficient light) or
overexposed (too much light). Adjust the
shutter speed using the
or
button until
the aperture value display turns to white.
The nature of CCD image sensors is such
that noise in the recorded image increases
at slow shutter speeds. This camera,
however, applies special processing to
images shot at shutter speeds slower than
1.3 seconds to eliminate the noise, thereby
producing high-quality images.
Nevertheless, a certain amount of
processing time may be required before the
next image can be shot.