"How Digital Cameras Work?"

                                                                 The basic working of the Digital                                                                  camera and Film camera is one                                                                  and the same. Both use the                                                                  shutter, lens and aperture. The                                                                  Lens captures the light and then it                                                                  passes it into the aperture, which                                                                  controls the light and the shutter                                                                  opens and closes to control the                                                                  duration of light, which enters.

                                                                 The major difference is the                                                                  technology of capturing the image.                                                                  Digital camera does not use film                                                                  to store the image. In Digital                                                                  camera an image sensor is used                                                                  to capture the image. It is a computer silicon chip. On the surface of this chip there are millions of pixels, which are photosensitive diodes.




















The shutter button of the digital camera activates a metering cell, which manages the shutter speed and aperture according to the amount of light coming through the lens. When a person clicks on the camera shutter each and every pixel of the image sensor stores the intensity of the light, which falls on it by gathering an electrical charge. When strong light hits a pixel, it generates high charge and weak light generates low charge.

After the shutter closes charges from every pixel is converted into digital numbers. This series of numbers creates an image on a computer screen.

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