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Exposure – adjusting the light intensity, Exposure – Sony DSC-T9 User Manual

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You can create various images by adjusting the exposure and the ISO sensitivity. Exposure is
the amount of light that the camera will receive when you release the shutter.

Adjusting the ISO sensitivity

ISO is unit of measurement (sensitivity), estimating how much light an image pickup device
(equivalent to photo films) receives. Even when the exposure is the same, images differ
depending on the ISO sensitivity.
To adjust the ISO sensitivity

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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.

EV:
Allows you to adjust the exposure that has
been determined by the camera.
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Metering Mode:
Allows you to change the part of the
subject to be measured to determine the
exposure.

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Correct exposure

Underexposure
= too little light
Darker image

High ISO sensitivity
Records a bright image even when shooting in a dark location.
However, the image tends to become noisy.

Low ISO sensitivity
Records a smoother image.
However, when the exposure is insufficient, the image may become darker.

Shutter speed = Length of time the camera receives

light

Aperture = Size of the opening allowing light to pass

through

ISO =

Recording sensitivity

Exposure: