Sony Cyber-Shot DSC-S730 Instruction Manual page 41

Basic techniques for better images
On "image quality" and "image size"
A"di
age is made up of a collection of small dots called pixels.
If
it cains a large number of pixels, the picture becomes large, it takes up more memory,
and the image is displayed in fine detail. "Image size" is shown by the number of pixels.
Although you cannot see the differences on the screen of the camera, the fine detail and data
processing time differ when the image is printed or displayed on a computer screen.
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Description of the pixels and the image size
CD
Image size: 7M
3072 pixels x 2304 pixels = 7,077,888 pixels
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Image size: VGA(E-Mail)
640 pixels x 480 pixels = 307,200 pixels
Few pixels (Rough
image quality but
small file size)
Many pixels (Fine
image quality and
large file size)
Example: An attached
image to be sent by e-
mail
Example: Printing in
up to A3 size
Selecting the image size for use (page 24)
Pixel
10