Sony DSLR-A100 - Manual (Page 16)

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You can create various images by adjusting the shutter speed and aperture. Exposure is the
amount of light that the camera will receive when you release the shutter.
Exposure Adjusting the light intensity
Overexposure
= too much light
Whitish image The exposure is automatically set to the
proper value in the auto adjustment mode.
However, you can adjust it manually using
the functions below.
Manual exposure:
Allows you to adjust the shutter speed and
aperture value manually.
t page 37
Metering Mode:
Allows you to change the part of the
subject to be measured to determine the
exposure.
t page 58
Exposure compensation:
Allows you to adjust the exposure that has
been determined by the camera.
t page 65
Correct exposure
Underexposure
= too little light
Darker image
Shutter speed = Length of time the camera
receives light
Aperture = Size of the opening allowing light to pass
through
Image sensor = Part that records the image
Exposure: