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Digital Cameras
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Digital Cameras |
In the past twenty years, most of the major
technological breakthroughs in consumer electronics
have really been part of one larger breakthrough.
When you get down to it, CDs, DVDs, HDTV, MP3s and
DVRs are all built around the same basic process:
converting conventional analog information
(represented by a fluctuating wave) into digital
information (represented by ones and zeros, or
bits). This fundamental shift in technology totally
changed how we handle visual and audio information
-- it completely redefined what is possible
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Capturing Color |
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Unfortunately, each photosite is colorblind. It only keeps track
of the total intensity of the light that strikes its surface. In
order to get a full color image, most sensors use filtering to
look at the light in its three primary colors. Once the camera
records all three colors, it combines them to create the full
spectrum.
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Most digital cameras have an
LCD screen, so you can view your picture right away. This is
one of the great advantages of a digital camera -- you get
immediate feedback on what you capture. Of course, viewing
the image on your camera would lose its charm if that's all
you could do. You want to be able to load the picture into
your computer or send it directly to a printer. There are
several ways to do this.
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Camcorders |
In most of the world, camcorders, or video camera-recorders,
have been a familiar sight for nearly 20 years. People take them
everywhere: to school plays, sports events, family reunions and
even births! When you go to a popular tourist spot, you are
surrounded by them. Camcorders have really taken hold in the
United States, Japan and many other countries around the world
because they are an extremely useful piece of technology that
you can own for under $300 (or more than $100,000).More |
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| Last updated at : 11/14/2007 9:10:41 PM |
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