Technology has revolutionized the concept of capturing live images. The previous concept of producing permanent picture was pure chemistry. In 1830, Louis Daguerre invented the first practical way of producing permanent photographs. Today we speak of photos filmless computerized photographic image of a device that is smart in electronic intelligence and have been incorporated in appearance - digital camera.

A digital camera takes video, photographs,digital or both. Records images on a light sensor. Instead of negotiating with a film, a series of Charged-coupled devices, photosensitive semiconductor, the electric charge, does the job. These digital sensors which consist of pixel-transform light the scene, went into an analog signal, which was later converted into a digital format. An electronic system that controls the color filter and other visual components. Another system reduces the image. The imageFinally, a temporary storage space and ultimately, to a card. Many compact digital cameras that can record audio, video and photos.

The printed images are transferred to a computer where they can be edited, attached to e-mail, pasted into Web pages, etc. The main advantages of them lack the capacity and ability to images on a small display screen.

The technology of digital camera refers to the same technologyVideo Tape Recorder. VTR in 1951 the first pictures taken from television through the conversion of information into electrical impulses (digital) and then save the file on the tape. It 'was in 1960, when NASA took a major step towards the conversion of analog signals to digital by the probe to map the lunar surface. He also had his other applications of digital imaging spy satellites.

Kodak scientists invented the first mega-pixel sensor, the inclusion of 1.4Million pixels. 1991 Kodak released the first digital camera system, a Nikon F-3 with a 1.3 megapixel camera, for journalists. The first digital camera for consumers, who worked with a home PC through a serial cable were the Apple Quick Take camera 100 (1994), the Kodak DC40 camera (1995), the Casio QV-11 LCD Monitor (end of 1995 ) and Sony Cyber-shot Digital Still Camera (1996).

The main features of a digital cameracan be summarized as follows:

Resolution: Resolution means sharpness of an image. The higher the number of pixels, the higher the resolution.

Memory: the images are stored in a file with a digital camera. The amount of memory determines the number of images that can be taken will be stored and downloaded to your computer.

Have Flash Art: Most of them a built-in flash with a range of about 10 -16 m, should be required to provide additional lightPhotographs of light too little.

Optical Zoom: Use in general, two types of zoom lenses that is., Digital and optical. Optical zoom lenses tend to serve the purpose, as the addition of detail and sharpness.

Compression: This process helps to reduce the file size.

Lens: The length of a lens designed to fit over a scene in a painting.

LCD: A very interesting feature of a digital camera is the LCD screen that allows you to see what thePhotos will be like before and after the taking of photographs, to decide what to space, whether to delete or save the photo.

On the market there are several brands that are sold successfully and continuously improving technology are paving the way for the introduction of the more interesting features of the digital camera.

See Also : 26 inch LCD TV New Laptops pc 55 inch LCD TV Promotion