Sony DSC-W30 - Manual (Page 14)

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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
t page 35
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.
Adjusting EV:
Allows you to adjust the exposure that has
been determined by the camera.
t step 5 in “Read This First”
Metering Mode:
Allows you to change the part of the
subject to be measured to determine the
exposure.
t page 34
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: