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http://www.cnn.com/2000/TECH/computing/06/15/digital.camera.idg/.
This article basically describes the operation behind a digital camera, the difference between digital and film cameras, and which camera is best for consumers to purchase. In detail, the article explains that digital cameras take an image by a light-sensitive sensor array instead of the traditional film. With film base cameras, the image is put on light sensitive film to store a picture rather than a memory chip that is found in a digital camera. Each digital camera has a charge-coupled device, or a CCD. This is a silicon chip made up of light-sensitive diodes arranged in a grid across its face. One array of a million sensors is said to make up one “megapixel” of data. The article went on to provide information to the consumer, saying that the digital cameras are becoming more affordable for better quality. Prices are dropping, while the amount of megapixels is rising.
Gurevich, Gerald Jay, and Nice, Karim. A Filmless Camera. How Stuff Works. 22 September 2002
The article explains how digital cameras convert light into images on a computer. A sensor, called a charge coupled device, has tiny light sensitive diodes (photosites) that convert light into electrical charges. A Bayer filter pattern determines color by alternating red, green, and blue filters over the pixels. A demosaicing algorithm converts the separate colors seen by the filters over the pixels. Electrical signals then pass through an analog-to-digital converter, which translates them into code the computer can read, and you can then view the photos, print them off, save them, etc.
Digital Cameras: How They Work. Jones Telecommunications & Multimedia Encyclopedia. 23 September 2002
This article talks about the technology and history of digitals cameras. It begins by giving a brief synopsis of the technology behind digital photography. We then learn how the digital camera came to be through research. The technology got better from there and evolved into what we now call digital cameras. A detailed description of the process of transferring the image to digital form follows. It explains everything from how the image is transferred to how the color and brightness are portrayed in the digital image. It also talks about the three main colors and how the processor in the camera turns one of three colors into any color imaginable by altering its saturation. It is explained in simple terms so that anyone could understand it.
News: Chip Vendors Crowd into Digital-Camera Picture. E-Library. 22 September 2002
The market for digital cameras is continuing to grow rapidly. Within the past two years this market has more than tripled in size. Companies are racing to produce the best and the smallest single chip image-processing solution for digital cameras. One of the most recent contributions to the market, that is preferred among camera owners is the new digital camera from Sanyo Fisher Co. This camera features a single chip image-processing engine, which allows the company to reduce the number of chips from three to one, to slash the form factor by more than thirty percent and allows the processing of one image every 1.5 seconds, which is four times faster than the average digital camera. This remains “one of the smallest and lightest digital cameras in its class.” From here, other companies such as Comdex, Photo bit, Hyundai Electronics, and Omni Vision Technologies have tried and continue to try to surpass the Sanyo Fisher Co.’s advancement in the field of digital cameras. For now, other cameras don’t compare because of the “noise” they produce which reduces image quality. This competition between companies fuels this advancement in the technology of digital cameras and
supports the theory that there are many more contributions and developments yet to come.
Gurevich, Gerald Jay, and Nice, Karim. What They Can Do. How Stuff Works. 23 September 2002
The article on digital cameras discusses what they are capable of doing. It talks about the basics for how they work and compares them to how conventional or “film” cameras work. The next topic the article touches upon is it explains how you can e-mail the pictures you take to your friends and family and gives reasons for why it is much easier to do it with a digital camera, rather than a conventional camera. After that, the article describes how you can alter the pictures taken. From cropping and pasting, to resizing and rotating, it lists options that you have with the right image-editing software. Finally, the article states how you can use the pictures you take to form a large panoramic view, or even a 360-degree view from a mountain top. In short, the article gives explanations for why digital cameras are such a technological breakthrough and how they can totally change the way we take pictures.
Gurevich, Gerald Jay, and Nice, Karim. Understanding the Basics. How Stuff Works. 23 September 2002
This article gave an in depth description about how digital cameras operate. It breaks down the camera into parts. Within each part of the camera, it explains how it works, why it is essential to the camera, and what its job is in the camera.
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