How Does a Digital Camera Work ?

Maybe you familiar with your Digital Camera and often use it to take pictures or record video. but probably you could only use them, only a few people know How Does a Digital Camera Work. Now i will explain How does a Digital Camera Work :

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As quoted in ehow.com there are four stages How Does a Digital Camera Work first The Basics, second CCD and CMOS Sensors, third Color Conversion, and the last is Color Conversion.

The Basics

   ''Traditional Film records an picture utilizing an eye and shutter equipment. Once you snap or press the appropriate button or handle on a Film camera, the shutter reveals, passes mild from the picture through the contacts to the eye and then quickly ends. A substance procedure is then used to mark the picture sent from the contacts to movie or photo paper in the bottom or rear of the electronic camera body. Similarly, a photographic camera also uses a shutter and eye to capture mild from an picture. However, instead of using a substance procedure to mark the picture on a movie negative, a photographic electronic camera records the picture electronically. The information comprising the picture is stored in bits and bytes, allowing other computer systems and electronic devices to understand it. In most cases, Camera shop images on flash memory cards or USB stays, but some models shop picture information on hard pushes like those found in computer systems.''

CCD and CMOS Sensors

   '' To catch light from an picture in gifs, a photographic digital camera uses a special indicator, usually called a CCD (charge-coupled device) or CMOS (complementary metal-oxide semiconductor) indicator. Both types of receptors are common in thousands of cameras and both provide excellent methods for taking electronic pictures. CCD and CMOS receptors are typically the size of a finger nail and designed out of rubber. The outer lining area of the indicator contains millions of micro-sized diodes that catch a single pixel of the picture taken by the contacts eye when the shutter reveals and ends. Usually, the more diodes on the outside area of the indicator, the better quality picture a photographic digital camera is able to take. When you see sources to mp in digital camera requirements, they refer to the number of receptors on the outside area of the CCD or CMOS indicator. Camera with greater mega-pixel scores generally take greater resolution, or better, pictures than designs with lower mega-pixel. ''

Color Conversion

    ''Early film camera could only catch a photo picture in grayscale. Producing a shade picture required hand shading after the picture was taken and developed. In 1860, Wayne Worker discovered a way to convert black-and-white pictures to shade ones using special red, azure and natural filters. Simply put, a photo camera creates three different pictures using each colored narrow and then adjusts the three strained pictures to create one full-color picture. Modern Camera use a sophisticated process called “interpolation” to narrow red, azure and natural shades and then combine them once the shutter allows an picture to pass to the eye of the photo camera. All shades in the readable variety contain some mixture of red, azure and natural – even grayscale – and the CCD or CMOS indicator in the photo camera provides all of the RGB (red, natural, blue) information needed for the processor in the photo camera to understand shades from the picture scene passed from the contacts to the indicator. ''

The Computer Inside

    '' Whenever you take images with a Digital camera, millions of functions occur very quickly within the electronic camera. In order for a Digital camera to capture, interpolate, pack, filter, store and review pictures, it uses a tiny on-board laptop or computer. In some aspects, the pc in a Digital camera is similar to the one you are probably using to view this article. It has a processor, memory and a storage medium; but unlike a laptop or pc, the pc within a Digital camera usually is located on just one processor. While taking and interpolating pictures would require a lot of handling power if used on a laptop or computer with many software applications installed, manufacturers are able to use lower-cost and smaller single-chip computers in Camera because they execute only a very small number of features and innovative math functions. Digital cameras with the simplest on-board laptop or computer chips execute primary picture-taking features relatively well. More innovative models often have larger, higher-capacity chips that allow the user to execute primary modifying features such as red-eye elimination, image enhancement and boundaries, and even cloud elimination directly on the Digital camera before the pictures are moved to a PC.''

[Via : Ehow.com]