Tuesday, 15 January 2013

How Digital Cameras Work


One of the most outstanding instances of modern technology is the digital camera; one of the biggest breakthroughs is due to the total difference from its predecessor the conventional camera.

Depending totally on chemical and mechanical processes, the conventional camera didn't even need electricity to work! In comparison, all digital cameras have built-in computers, and they all record images electronically.

There is still a reluctance to replace conventional cameras because the quality of digital prints does not meet the quality of the more traditional film prints.  They are, however, becoming more and more popular as advances are made in digital imaging technology.

If you want to send a picture by email, it must first be in a language that computers understand and recognize; in this case, these are bits and bytes.  Digital images are basically long strings of 1s and 0s, representing the pixels, or tiny colored dots, that make up the image.

You have two options on getting this picture into the format that you want.

* You can take a picture with a conventional film camera, have the film chemically processed and printed on photographic paper, then scan it into the computer. This is the way it has been done for quite some time, and digital cameras have eliminated the chemical processing, printing, and scanning parts.

* You can take the picture with a digital camera and send it on an email without all of the chemicals, printing, and scanning needed in the past.

Like a conventional camera, the digital camera has a series of lenses that focus light, creating an image of a scene.

The difference comes when the light is focused onto a semiconductor instead of a piece of film; the semiconductor records the light electronically.  The electronic information is then broken down by a computer into digital data.


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