Sony DSLR-A100 - Manual (Page 17)

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The apparent color of the subject is affected by the lighting conditions.
Example: The color of an image affected by light sources
The color tones are adjusted automatically in the auto white balance mode.
However, you can adjust color tones manually with the white balance mode (page 46).
A digital image is made up of a collection of small dots called pixels.
If it contains 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.
Description of the pixels and the image size
Color On the effects of lighting
Weather/lighting Daylight Cloudy Fluorescent Incandescent
Characteristics of
light White (standard) Bluish Blue-tinged Reddish
Quality On “image quality” and “image size”
1 Image size: L:10M
3,872 pixels × 2,592 pixels = 10,036,224 pixels
2 Image size: S:2.5M
1,920 pixels × 1,280 pixels = 2,457,600 pixels
Pixels