Camera Lenses Sizes

Technology has revolutionized the concept of capturing live images. The earlier concept of producing permanent photograph was based on pure chemistry. In 1830, Louis Daguerre, developed the first practical way of producing permanent photographs. Today, we are talking about the computerized photo-imaging in filmless picture taken by a device that is intelligent intelligence electronics and in appearance – digital camera.

The digital video camera, photographs, or both digitally. It records images in a sensitive sensor light. Instead of using a film, an array of devices for charged-coupled light sensitive semiconductors, which stores electric charges-does the job. These digital sensors consist pixels, turn the light hit the scene in an analog signal that is then converted to a digital version. An electronic system regulates the components of image filtering Color and others. Another system reduces the picture. The image is finally sent to a temporary storage area and, finally, in a memory card. Many cameras Digital Compact can record sound, video and photos.

The images are transferred to a computer where it can be modified, printed, email attachment, set web pages, etc. The most significant advantages of a digital camera is its memory capacity and ability to screen the images taken in a tiny video monitor.

The technology of digital camera refers to the same technology of Video Tape Recorder. The first VTR in 1951 captured images of the television, converting the information electrical impulses (digital) and then saving them on tape. It was in 1960 when NASA had made a major breakthrough, converting analog signals digital by spacecraft to map the moon's surface. Also had its digital image uses other spy satellites.

Kodak scientists invented the first mega pixel sensor capable of recording 1.4 million pixels. In 1991, Kodak launched the first digital camera system, a Nikon F-3 camera equipped with a 1.3 megapixels aimed at journalists. The first digital camera for consumers, who worked with a home PC through a serial cable were the Apple Quick Take 100 camera (1994), Kodak DC40 (1995), the Casio QV-11 with LCD display (late 1995) and `s Sony Cyber-Shot Digital Still Camera (1996).

The main features of a camera digital can be summarized as follows:

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

Memory: The images are stored as a data file in a digital camera. The memory size determines the number of images that can be taken, stored and downloaded to your computer.

Flash Type: Most digital cameras have a built-in flash of a range around 10 -16 meters, which is required to provide extra light needed to shoot the light.

Optical Zoom: Usually two types of zoom lenses are used viz., Digital and optical. The optical zoom lenses serve one purpose as adding more detail and sharpness.

Compression: This process helps reduce the file size.

Lens: The length of a lens determines how a scene will fit into a picture.

LCD: A very interesting feature of a digital camera is the LCD screen that allows a See the photo will look like before and after the shooting, leaving space to decide whether to delete or save the picture.

In the market there are several brands a digital camera that is successfully selling and continuous improvement in technology is the main way of introducing more features and more exciting digital camera.

About the Author:

This article can also be accessed in portuguese language from the Article section of page www.polomercantil.com.br/camera-digital.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br

Article Source: ArticlesBase.com – The Technology Behind Digital Cameras

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