These safeguard against dust
buildup on the camera sensor, which often occurs when changing lenses. Anti-dust
systems consist of a coating on the sensor that repels dust. The sensor is gently
shaken when the camera is shut off to dislodge any dust that may have accumulated
on the sensor.
??? Auto-exposure bracketing (AEB) enables you to take three pictures of a scene: one
with the camera??™s recommended setting, one with a higher exposure, and one with a
lower exposure. This option ensures you??™ll get the same shot in difficult lighting conditions.
??? Exposure control enables you to capture images in aperture priority mode or shutter
priority mode, depending on the type of scene you are capturing. Many cameras also
give you the option of setting the exposure manually. When you shoot in aperture priority
mode, you can control how much light is let into the camera, which also determines
how much of the scene is in focus (known as depth of field). When you shoot in shutter
priority mode, the camera exposes the image based on the shutter speed you specify.
A high shutter speed enables you to freeze action. If your camera has a manual mode,
you set both shutter speed and aperture to arrive at the desired exposure.
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