The Inside Picture Of A Digital Camera

Electronics greatest technological revolution in the present age is the digitization of analog signals. Digital information, which is represented by 1 and 0, is successful on the conversion of analog information, which is represented by a wave is fluctuating. This transition from analog to digital has made the world of science and technology make great advances in the field of computers, internet, satellite and space research. The domain from consumers, the benefits can be seen this technological breakthrough into consumer electronics such as televisions, computers, cameras, camcorders, CDs, DVDs, etc. in technology have given rise to microchips that are programmed, which could solve any problem . With the use of the microchip, was born in the camera. It focuses on a digital camera, the lens the image that can trigger the entry of the reflected light image in the camera for a split second, and the aperture determines the amount of light allowed into the camera. When light enters the camera, do not fall on a photographic film, as in a conventional camera, but on an image sensor falls. The image sensor is an electronic device, a semiconductor, consisting of photo sites that measures intensity of light. The photo site can only measure the intensity of light and can not see any color. To work around this problem, each photo site with a filter of red or green or blue in a pattern known as the Bayer-pattern cover. Because the human eye is sensitive to two times the color, the number of sites with pictures of the green twice the number of photo sites with red or blue. Millions of sites are covered by the photos Bayer pattern. Each color is located on one site photo, which is known as pixels. The greater the number of pixels, the higher the amount of detail that can be captured. The detail of the images is the resolution that called on the quality of the lenses and the number of pixels of the image sensor is determined. High-end digital cameras are about 12 million pixels, whereas professional digital cameras are about 20 million pixels. The pixel information is recorded as analog electrical signal is amplified, and then into a converter that converts the amplified analog signals into digital binary numbers according to the color of each pixel included. These digital binary numbers are then entered into a computer chip residing inside the camera. The computer chip analyzes the digital binary numbers, which were about the color of each pixel. This information will be known RAW data. For analysis, the computer chip subjects this RAW data using a technique known as demosaicing. ) In this technique (demosaicing, is the pixel color to the color of the surrounding pixels determined. For example, if a red pixel by pixel is surrounded by green and blue, then this is the red pixel is considered as a white because white is the color combination of red, blue and green. After demosaicing is complete, the image is displayed on the settings of the photographer’s camera, as if made for the settings for brightness, color saturation, contrast, etc. Do not do high-end digital cameras usually something for the image thus created. However, professional digital cameras to tighten correct algorithm sharpness and clarity of the image demosaiced and attitudes have increased. Professional digital cameras also have the option to save the image in its raw data first demosaicing or adjustments are made by the chip. This is the control of a professional photographer to take for changes to the raw data in accordance with its decisions. The image can be stored in an uncompressed format like TIFF or a compressed format like JPEG. Uncompressed format for additional information so that the details of photography is much more than a compressed format, where detail is less than the lowest information is stored. Therefore, the compressed formats are also known as lossy formats, since the data will be lost. An uncompressed format increases the size of the file, while a compressed format reduces the file size. If necessary, the image can be stored in an uncompressed or compressed image format, as bits and bytes on a memory card. The stored images can be viewed on the camera screen as a digital photo. Digital photography can be transferred from digital camera to your computer hard drive via the serial port or USB port or FireWire or Bluetooth connectivity with Wi-Fi. The raw data and uncompressed data, such as TIFF takes longer to transfer compressed data like JPEG or GIF. Once the data has been transferred to the computer `s hard to manipulate a photo-editing software and customize according to individual preferences and needs of the photographer. Digital photography can be printed on photo paper, special coated paper or other document to a printer color ink jet or laser printer. Using a plotter, which can be printed in larger formats, in another medium, like canvas, acrylic, vinyl, etc. The digital photograph on a hard disk, pen drive or CD can be stored for archival purposes. Over time, more and more functions are implemented in a digital camera. Today, audio-video merges with the ability to record still images of digital camera, so that) are small camcorders (camera + recorder.

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Tagged with: Camera • Digital • Inside • Picture

Filed under: Digital SLR Tips

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