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This post is about Digital Camera & Digital Camcorder.
Digital camera
FOR MORE THAN 200 YEARS, CAMERAS recorded pictures of chemical changes in silver-containing substances, on a Strip of Flexible & Celluloid Film. The digital camera records pictures in Electronic Form. At its heart is a specialized integrated circuit known as a Charge-Coupled Device (CCD).
This has millions of Micro-Units known as Pixels. It works oppositely to a miniature computer or TV screen. Instead of electric signals making pixels shine, when light hits a pixel it generates a tiny electrical signal, according to the light's color and brightness. The signals from the CCD's millions of pixels are analog: they vary continuously in a wave-like fashion.
They are converted by a microchip to digital codes of numbers, represented as on-off electronic pulses. The digital signals are processed and fed to the camera's internal memory or a removable memory device such as a data card or memory stick.
Photographs can be downloaded from a digital camera to a computer via a cable or in some cases a wireless link. Some digital cameras automatically reduce blurring caused by camera shake or fast movement, some can record video clips as well as still pictures.
How does a digital camera work?
A leveled picture is inserted to understand easily.
Digital camcorder
A CAMCORDER records a scene as a sequence of 25 or 30 still images per second, along with sound.
It comprises a video camera to capture light from the scene, a viewfinder through which the scene may be viewed, a screen on which the recorded scene may be viewed, a Charge-Coupled Device (CCD) to convert the visual data into an electric signal, and a means of storing the signal.
Digital video cameras convert the signal into digital form a series of separate measurements of the initial analog (continuously varying) signal. They record the digital signal, usually on a chip or hard disk. Camcorders often have a slot where a memory card can be inserted to expand the memory and store longer recordings or more still pictures.
Here are some different cameras to improve your knowledge.
*3D DIGITAL CAMERA*
*UNDERWATER DIGITAL CAMERA*
*INTERCHANGEABLE LENS DIGITAL CAMERA*
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