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1
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1
1
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5
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1
0
1
0
1
0
1
0
1
0
10
1
0
10
1
0
1
0
10
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10
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20
20
KA-
CHING!
How Digital Cameras Record
Pictures
Digital cameras record pictures
using an image sensor array —
a grid composed of millions of
light-sensitive pixels. The term
pixel describes a picture
element. The pixels are the
building blocks of all digital
images. A red, green, or blue
filter covers each pixel on the
sensor so that it responds to
only one of the primary colors
of light. Each pixel reads the
brightness and color in a scene
to produce an electrical signal.
The signal is then converted to
a digital number that represents
the color and brightness of the
pixel. The camera’s onboard
computer processes the
information to build a final
image before storing it in
memory.
When you understand how digital cameras work,
you can take that knowledge and make an
informed decision when it comes time to purchase
your first digital camera or to upgrade your
existing one. Knowing how digital cameras work
also enables you to get better images from your
camera.
Discover
Digital Cameras
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